I have the motorola droid and you have to kind of force the update if you want it today
just follow the steps here:
http://androidforums.com/motorola-droid/140721-how-force-official-android-2-2-froyo-update-motrola-droid.html#post1296035
For the evo on sprint you can just update from your phone and I'm sure it will be like that for everything else sometime later this week