SharePoint 2010 SP2 has been released

Please be aware that SP2 is now available for Office 2010 and SharePoint 2010 as well as the other server products.

The SP2 release improves the compatibility of the Office and SharePoint 2010 products with Windows 8, Internet Explorer 10, Office 2013, and SharePoint 2013. It also addresses security, stability, and performance and contains all the Cumulative Updates (CU)and Public Updates (PU) that have released since SP1, starting with the June 2011 CU and July 2011 PU and ending with the April 2013 CU and May 2013 PU.

SharePoint Server 2010 SP2
http://support.microsoft.com/kb/2687453
SharePoint Foundation 2010 SP2
http://support.microsoft.com/kb/2687464

*Unlikely the previous SP1 , if you have SharePoint Server 2010 installation you don’t need to install SharePoint Foundation 2010 SP2 first, SharePoint Server SP2 already contains this update.

Server Language Pack SP2
http://support.microsoft.com/kb/2687462
SharePoint Foundation 2010 Language Pack SP2
http://support.microsoft.com/kb/2687466

Project Server 2010 SP2
http://support.microsoft.com/kb/2687452
Search Server 2010 SP2
http://support.microsoft.com/kb/2687461
SharePoint Designer 2010 SP2
http://support.microsoft.com/kb/2687463

* It is recommended to install June 2013 CU before SP2. June 2013 CU might not correctly identify the SP2 baseline. If SP2 has already been installed and June CU does not install you need to wait for August CU which will correctly identify the SP2 baseline.

* our Service Packs are cumulative. You can install SP2 directly on RTM.

Here you can find some changes with SharePoint SP2

• Navigating to a SharePoint site with a BlackBerry device may open a non-mobile page.   Adding RIM6 into compat.browser allows users to access SharePoint pages and view documents in mobile view.
• If anonymous access is enabled for Sharepoint 2010 SP1 (or later Cumulative Update), attempts to to access the site via a mobile device will receive an authentication prompt.
• Customers are unable to use spell check in Korean when running SharePoint on Windows Server 2012.
• Displaying Summary Links Web Part in personalizing view; generating confusing error message.
• Deployment fails for content types containing a formula field in Italian.
• File attachments are not deleted due to incorrect URL formatting
• If requireExactUrl is not set for openweb calls, the PublishingWeb constructor may spawn variation pages  into incorrect locations while attempting re-creation of failed label during create hierarchies.
• Incremental content deployment fails, giving the following error: FatalError: The given key was not present in the dictionary
• Spell Checker doesn’t work properly with Internet Explorer 10.
• Rich text editor spell checker may work incorrectly on 64 bit machines.
• Customers encounter issues sending e-mail from workflows when the From address uses a non-Unicode character set.
• Updated VBE7.dll to fix safe array corruption for x64 hosts when calling UDF methods using safe array arguments directly from the host.
• SQL exceptions will appear in the log when running update statistics timer.
• Improved performance of the AllUserData table.
• Getting a feed against a discussion board fails if feed contains more than zero items.
• SharePoint 2010 client object model now has compatibility for accessing Sharepoint 2013 servers.
• Windows 8 users with Internet Explorer 10 receive an error when trying to open a document from SharePoint 2010 directly in the Office client.
• Call GetChanges won’t return changes in certain cases where the change log has been edited and no parameters are set.
• STSAdm MigrateUser fails when SQL server is not in domain.
• Attempting to delete a child web from site settings causes the page to fail.
• There is no exposed method to recalculate the second stage recycle bin size.
• April 2011 Calendar View does not display correctly with Amman System Time zone
• Users can create a scenario where a site loses permissions.
• After deleting a web that contains historical document versions in the RecycleBin, rows are abandoned in the database.  These rows bloat the size of the database, causing difficulty with database management operations such as backup/restore, complicating upgrade and other scenarios.
• After creating alerts on a document library with unique permissions and moving the contents using SPFolder.MoveTo method, the permissions seem to be lost and even the farm administrator is not able to delete these alerts.

More Resources:
http://blogs.technet.com/b/office_sustained_engineering/

http://blogs.office.com/b/sharepoint/archive/2013/07/23/check-out-the-sharepoint-server-2010-service-pack-2.aspx

Note: Due to required changes to the Prerequisite Installer, Service Pack 2 cannot be slipstreamed into installation media for use with installation on Windows Server 2012 systems.  Installation of SharePoint Server 2010 with Service Pack 2 on Windows Server 2012 systems requires an integrated Service Pack 2 installation media due
following the patch release.