objc.io
The first issue of objc.io is now available (via Jake Marsh):
Welcome to the first edition of objc.io, a periodical about best practices and advanced techniques in Objective-C!
objc.io was founded in Berlin by Chris Eidhof, Daniel Eggert, and Florian Kugler. We started objc.io to create a regular platform for in-depth technical topics relevant to all iOS and OS X developers.
It looks great. Currently, there’s an e-mail list and a Twitter account, but no RSS feed.