This may not be new, but I thought it should be mentioned here that XCode 3.1 is now available on ADC (Mac side) as of July 11.
If you download XCode 3.1 from ADC (filename: xcode31_2199_developerdvd.dmg) it doesn't have iPhone stuff. When you go "new project" only Mac OS X options are present.
If you download iphone_sdk_final.dmg which is .25GB bigger you get more choices.
Is 3.1 going to come through Software Update? Is there a change log for it somewheres I could look at?