A small excerpt from the SharePoint Team Blog :

New enhancements will Improve the way you interact with information in SharePoint 2010. Service Pack 1 adds support for working with SharePoint and the Office Web Applications using Internet Explorer 9 and the Google Chrome browser (for a complete list of supported browsers for SharePoint 2010, see also http://technet.microsoft.com/en-us/ library/cc263526.aspx ), support for Open Document Format documents, and more.

It should also OpenDocument formats are supported. Google Docs, ick you hear Trappsen ...