It's still early days, but myself and Dan Grigsby launched http://www.mobileorchard.com/ a couple of weeks ago.

We already have an iPhone developers' podcast (first episode is an interview with Hampton Catlin, who's selling 1000 copies of his app each day) and are trying to link to interesting iPhone developer related stuff over time. It's getting better each week :) You can also follow us on Twitter at http://twitter.com/MobileOrchard

As an example of what we have, try: http://www.mobileorchard.com/9-places-to-publicize-your-ipho... - 9 places to publicize your iPhone app :)