After pulling Rollup 3 for Exchange Server 2010 SP1 after an important Blackberry issue on March 15th, the Exchange team claim to have fixed the issue and and re-released the rollup. So, after re-releasing Exchange 2007 SP3 Rollup 3 after fixing potential store corruption issues, Exchange 2010 SP1 now also gets its own rollup re-release. Note that its officially a v3 release; I don’t know what happened to v2.
Exchange 2010 SP1 Rollup 3 v3 raises Exchange 2010′s version number to 14.1.289.7 (initial release was 14.1.289.3). The related knowledgebase article is kb2529939.
You can download Exchange 2010 SP1 Rollup3 v3 here.