Today the Exchange Team released Rollup 10 for Exchange Server 2007 Service Pack 3 (KB2788321). This update raises Exchange 2007 version number to 8.3.298.3.

Here’s the list of changes included in this Rollup:

• This Rollup adds coexistence with Exchange Server 2013. However, for coexistence Exchange Server 2013 Cumulative Update 1 (CU1) is required, which hasn’t been released yet.
• 2783779 A hidden user is still displayed in the Organization information of Address Book in OWA in an Exchange Server 2007 environment

In addition to these fixes, this Rollup also includes a fix for the security issue described in Microsoft Security Bulletin MS13-012 and new daylight saving time (DST) updates.

When running ForeFront Protection for Exchange, make sure you disable ForeFront before installing the rollup and re-enable it afterwards, otherwise the Information Store and Transport services may not start. You can disable ForeFront using fscutility /disable and enable it using the fscutility /enable command.

Note that Rollups are cumulative, i.e. they contain fixes released in earlier update Rollups for the same product level (RTM, SP). This means you don’t need to install previous Rollups during a fresh installation but can start with the latest Rollup package.

You can download Exchange 2007 SP3 Rollup 10 here.