OpenOffice.org 3.0 is now available, you can grab it over here.
Chron has a piece on the new features of this office suit:
Version 3.0 can open dozens of document types, including the newer OpenXML formats used by Office 2007 in Windows and Office 2008 on the Mac, such as .docx from Word. However, while OpenOffice.org 3.0 can read these formats, it can't write to them. Instead, it can save to the previous Office formats, such as the older Word's .doc. This makes it a great choice for opening Office 2007/2007 documents that may be sent to you, even if you don't have Microsoft's newer suite.