There is new a CTP available of the Open XML SDK version 2.5: http://www.microsoft.com/en-us/download/details.aspx?id=30425
As I mentioned in my post earlier this week, Open XML is an important piece of our overall application model for Office 365 solutions.
Here are a few of the things that are new in this version of the SDK:
- New classes for file format extensions in Microsoft Office 2013 Preview
- Built on .NET Framework 4.0
- Reads the ISO Strict Format
- Fixes to some of the bugs from 2.0 (e.g. whitespaces in .pptx document file)
Take a look!