If you are not so lucky to get your hands on these new betas, there are few websites with more infos about these products:

• Introducing Microsoft Office 2010 Technical Preview
  http://www.microsoft.com/office/2010/
   
• Backstage with Office 2010:
  http://www.office2010themovie.com/
   
• New features in SharePoint 2010:
  http://sharepoint.microsoft.com/2010/Sneak_Peek/Pages/default.aspx

1. Press Win+R (Start > Run), type regedit and click OK to open Registry Editor
2. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Common\Portal
3. Delete LinkPublishingTimestamp binary value
4. Restart your Office application.

There is still no Hotfix available that addresses this issue. However there is a workaround:

To resolve this issue manually, enter the product key into the Convert License Type:

1. Browse to Central Administration
• Click on the Windows Start Menu
• Click Administrative Tools
• Click SharePoint 3.0 Central Administration
2. Click on the Operations tab
3. Click on Convert License Type
4. In the Enter the Product Key textbox, type in your product identification number and click okay.
5. The License Synchronizer Job will execute on all machines in the farm after a few moments. Once all machines have updated their license from the timer job, the Convert License Type page will reflect the correct license.

Windows SharePoint Services 3.0 is not affected by this issue.

Source:
http://support.microsoft.com/default.aspx/kb/971620

Customer Benefits
Key new features of Exchange Server 2007 SP2 unveiled include:

• Enhanced Auditing – New Exchange auditing events and audit log repository enable Exchange administrators to more easily audit the activities occurring on their Exchange servers. It allows the right balance of granularity, performance, and easy access to audited events via a dedicated audit log repository. This simplifies the auditing process and makes review of audited events easier by segregating audited events in a dedicated location.
• Exchange Volume Snapshot Backup Functionality - A new backup plug-in has been added to the product that will enable customers to create Exchange backups when a backup is invoked through the Windows Server 2008 Backup tool. Exchange Server 2007 didn’t have this capability on Windows Server 2008 and additional solutions were required to perform this task.
• Dynamic Active Directory Schema Update and Validation – The dynamic AD schema update and validation feature allows for future schema updates to be dynamic deployed as well as proactively preventing conflicts whenever a new property is added to the AD schema. Once this capability is deployed it will enable easier management of future schema updates and will prevent support issues when adding properties that don’t exist in the AD schema.
• Public Folder Quota Management – SP2 enables a consistent way to manage quotas by improving the current PowerShell cmdlets to perform quota management tasks.
• Centralized Organizational Settings – SP2 introduces new PowerShell option that enable centralized management of many of the Exchange organization settings.
• Named Properties cmdlets – SP2 enables Exchange administrators to monitor their named property usage per database.
• New User Interface for Managing Diagnostic Logging- SP2 enables Exchange administrators to easily configure and manage diagnostic logging from within the Exchange Management Console.

More infos at:
http://msexchangeteam.com/archive/2009/05/11/451281.aspx

How to do it? It’s pretty easy:

1. In a SharePoint 2007 Central Administration > Operations > Outgoing E-Mail Settings enter your server address and e-mail infos

    

2. In Exchange Management Shell, create a new Receive Connector:
   New-ReceiveConnector -Name ‘SharePoint’ -Usage ‘Custom’ –PermissionGroups AnonymousUsers -Bindings ’0.0.0.0:25′ -Fqdn ‘mail.contoso.com’ -RemoteIPRanges ’10.1.1.12/32′ -Server ‘exch01′
3. Run the following command using the name of the Receive connector that you created in step 2:
   Get-ReceiveConnector "SharePoint" | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"

More Infos about allowing Anonymous Relay on a Receive Connector:
http://technet.microsoft.com/en-us/library/bb232021.aspx

New features in this release:

Transport and Routing

• Cross-premises mail routing
• Enhanced disclaimers
• Transport rules integration with AD RMS
• Moderated Transport
• Shadow redundancy
• Transport dumpster truncation based on log copy status
• Latency SLA management
• Transport database improvements 

Outlook Web Access

• Favorites in the Navigation Pane
• Search folders
• Message filtering
• The ability to set categories in the message list
• Options in the Web management interface for Outlook Web Access
• A side-by-side view for calendars
• Multi-client language support
• The ability to attach messages to messages
• Expanded right-click capabilities
• Integration with Office Communicator, including presence, chat, and a contact list
• Conversation view
• The ability to send and receive text (SMS) messages from Outlook Web Access
• Outlook Web Access mailbox policies

Unified Messaging

• Personal auto attendants (call answering rules)
• Additional language support including in Outlook Voice Access and Voice Mail Preview
• Enhancements to name lookup from caller ID
• Voice Mail Preview
• Messaging Waiting Indicator
• Missed call and voice mail notifications using text messaging (SMS)
• Protected Voice Mail
• Built-in Unified Messaging administrative roles

Web Management Interface

• Text messaging (SMS) integration
• Voice messaging integration
• Mailbox Search
• Distribution list creation and management
• Moderation and approval for distribution list submission

It’s important to say, that some features are removed from Exchange 2010, such as:

• Storage groups are deprecated
• Local continuous replication (LCR)
• Single copy clusters (SCC)

Permissions functionality in Exchange 2010 was under a big revision. In Exchange 2010, Role Based Access Control (RBAC) has replaced the permissions model that was used in Exchange 2007. RBAC lets you define extremely broad or extremely precise roles and assignments based on the roles of your administrators and users, and the tasks they perform. Access to the cmdlets and parameters required to perform a task is granted by assigning the related RBAC management role to a user or universal security group. If you want to grant an administrator or user the ability to perform tasks in Exchange 2010, you must either add the administrator or user to a universal security group that already has been assigned a specific RBAC role, or you must assign the role directly to the administrator or user.

The complete list is available under What’s New in Exchange Server 2010 article in TechNet.

System Requirements

• Supported Operating Systems: Windows Server 2008; Windows Vista 64-bit Editions Service Pack 1
• Operating System for Installing Management Tools: The 64-bit editions of Microsoft® Windows Vista® SP1 or later, or Windows Server® 2008.
• PC – x64 architecture-based computer with Intel processor that supports Intel 64 architecture (formerly known as Intel EM64T) or AMD processor that supports the AMD64 platform

Additional requirements to run Exchange Server 2010 Beta

• Memory – Minimum of 4 gigabytes (GB) of RAM per server plus 5 megabytes (MB) of RAM recommended for each mailbox
• Disk space
  • At least 1.2 GB on the drive used for installation
  • An additional 500 MB of available disk space for each Unified Messaging (UM) language pack that you plan to install
  • 200 MB of available disk space on the system drive
• Drive – DVD-ROM drive, local or network accessible
• File format – Disk partitions formatted as NTFS file systems
• Monitor – Screen resolution 800 x 600 pixels or higher

Exchange Server 2010 Beta Prerequisites
If these required prerequisites are not already installed, the Exchange Server 2010 Beta setup process will prompt and provide links to the installation locations; Internet access will be required if the prerequisites are not already installed or available on a local network.

• Microsoft® .NET Framework 3.5
• Windows PowerShell v2
• Windows Remote Management

Download Link:
http://www.microsoft.com/downloads/details.aspx?FamilyID=1898ED2C-2F88-48AC-824E-D3D20FAD77D7&DisplayLang=en

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Feature Pack
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KB Article

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