This is a great set of best practice tips by Ryan Twomey for implementing push in your app. On the same subject, I came across an app the other day which seemed to do something interesting with the push notification prompt by only asking me for permission to push after I had launched it a few times. I would imagine this is a pretty good way to get more users to opt in as I had already had a chance to see if the app was useful to me before being prompted. Smart.
Håvard Fossli has open sourced some fantastic code which adds a quadrilateral property to CALayer along with a whole host of utility functions and animation helpers to give your flat layers a little more pop. Hard to explain in words so make sure you watch the YouTube video to get an idea of the possibilities.
Carson McDonald with some code for recording a "Vine" style multi-section video clip including an asset stitching class which could come in useful for all sorts of stuff. Let the Vine clones flow.
Cells inside cells inside cells inside cells, where will it end? Useful advice here from Ash Furrow on how to do this properly.