Well, I know when I'll have Froyo on my Inc. It will be approximately one to two weeks after the OTA rolls out on it... possibly longer, but no sooner. Until then, I'm declining the update. I've got my Inc exactly where I want it... running flawlessly, rooted, and FREE WiFi tether. I'm not messing with it until all the "early adopters" find out what the 2.2 update does to lock down the phone.
Call me cynical, but I'm not trading my current setup for anything unless I come out of it still rooted and still with free WiFi tether. Don't need more speed (can this phone really be faster?), don't need 720p, don't need a different mail app, and I definitely don't need to pay for tethering. Anything less than what I have now is not an improvement to me.