CiviCRM v2.0 has gotten really good community feedback and testing. We plan on having at least two more beta releases before issuing a final release. Both the forums and the issue queue have been very busy with good bugs (some of which have been there for the past couple of versions!) and great feature ideas, many of which we plan to implement in v2.1. We've already resolved more than 375 bugs in v2.0 which is close to 100 more bugs than the previous highest (282 in 1.8). The forums are averaging more than 75 forums post / weekday. Most of these posts are either related to 2.0 or we test it on 2.0.
We currently have at least 150 sites that have downloaded and installed 2.0 (thanx to our new improved ping back mechanism which gives us stats with regard to version numbers and cms). We'd like to bump this number up significantly over the next couple of weeks. Some reasons why you might want to try the new beta include:
A huge shout out to eileen, peterd and chris (coincidentally all kiwis) for their efforts in testing the release. Also a big thanx to speleo (who is NOT a kiwi) for updating the CiviCRM ERD (http://wiki.civicrm.org/confluence/display/CRMDOC/CiviCRM+ERD+2.0)