Here’s some interesting figures that should give you confidence to go ahead and use AutoCAD 2011 right away and not waiting for Update 1 (SP1). I personally found AutoCAD 2011 to be a very stable release but of course you should do your own test in your environment and with your addons.
- 76,000 man hours spent on Q/A of the new release
- 6,000 total code reviews of new release
- 2,000 commands tested
- 4,600 Beta customers involved in AutoCAD 2011
- 1.4M lines of old code were removed