They have had the preproduction 3.0 out for a while, it is actually surprisingly pretty stable. I had attended a WF 3.0 event at PTC for quality several months ago and they asked me to come back last month, but I was traveling for work. They have fixed almost all of the issues I found in it, and believe it or not quite a few existed in the previous builds (I think 4 or 5).
With WF 2.0 I had found about 12 issues, they opened quite a few SPRs some issues ended up being multiple, and the soloutions aretrickeling in have been fixed in WF 3.0, there were only one or two that the intend on fixing in WF 2.0.
What I have been finding in WF 2.0 is that they fix 15 items and break 18.
If I were still on2001I would consider seeing when the real release date is and do WF 3.0, they are talking about moving WF 3.0 earlier next year.
The big deal is training, and one thing that they are fixing in WF 3.0 is the detail mode which stinks in 2.0! They are fixing the selecting and double click, and the feel I get from PTC is that they want WF 3.0 to be really stable before releasing it, mind you it was almost ready this summer...
The last issue is data management and if your not running Intralink than it is not!