I presume that Erel was talking about RTP (Run Time Permissions) and that developers should remember to add the RTP library if they are going to set the Target to higher then >=23. All my apps are set to Target 27 and any apps that need the RTP library have got it.
Not just RTP, but other things are also be effect after Target 34.
But I could be incorrect about the consequences that Erel was talking about...