The slipstreamed version of SharePoint 2010 SP2 is now available via the Microsoft Volume Licensing Service Center or the Microsoft Developer Network, according to Microsoft's announcement by Stefan Goβner, a SharePoint senior escalation engineer at Microsoft. The timing of this release may seem a bit surprising, since SP2 for SharePoint 2010 was released back in July. However, the slipstreamed version apparently only became available 10 months later, on May 1. Organizations may prefer the slipstreamed version if they are newly installing Windows Server 2012 or Windows Server 2012 R2 since they can bundle up SharePoint 2010 SP2 and various updates and patches in the ISO. In addition, Goβner indicated that Microsoft only supports the use of the slipstreamed SharePoint 2010 SP2 version when installing it on Windows Server 2012 R2. Read the full story here.
A slipstreamed version of SharePoint 2010 Service Pack 2 which supports Windows Server 2012 and Windows Server 2012 R2 has been released by Microsoft.