I am guessing you all saw this story but just in case you have been living under a rock for the last week here it is (it also lets me introduce the next link with a bit of context). This was covered by everyone but I think The Next Web had a pretty good write up of the In-App Purchase exploit from last week.
And in response a service called Beeblex has launched with an easy way to properly validate IAP receipts without having to run your own server for receipt validation.
The main NSConference is always one of the conference highlights of the year for me (and for many other European developers too). Looks like they are trying something a little different with this one day design focused event.