As far as I know, 4.1 is still in GM, not released yet, you need a paid developer account to get the GM. In fact, not only is 4.1 not available, 4.0 is gone from MAS.
As an active developer with apps in the store etc, I don't like upgrading xcode until it's a final release. I've used GMs and betas too many times and then found out I can't submit code built from it.
It's really annoying, and I'm not about to test out the buggy xcodes or manage multiple installs. The current 4.x retail releases are buggy enough.
So if that's the way it's going to be I will also wait for everything to be released fully.
Oh I'm in the same place (well I'm a 3rd party developer supporting many shops like yours).
I've heard from one of the MailChimp guys 4.1 was submitting binaries just fine.
I call myself 'An Upgrade Coward'. I'm afraid of Xcode3 breaking even (a couple clients). Probably going to dupe my SSD into the Spinner so I have a working Xcode3 install no matter what.
You do know you can install multiple Xcode versions in parallel right?
