I'm still waiting for the RTM version, but I've been using the betas for a few months with no problems. Looking forward to the final versions.

 

BTW, the 3-character extension limit ended with Win95, the same time that 8-character filename limits ended. Lots of stuff out there uses longer extension names; we just haven't seen it much in Office.

I am running the released version.  It was put up on Microsoft's MSDN site on the 21st of November.  I know 8.3 is gone, but office products untill now created three character default extensions like .doc for Word, .ppt for Power Point, .ppt, and .mdb for Access.  Now the default extensions are .docx for Word, .accdb  for Access+....+