I allready stated in the news comments that if the schedule is right about release on the unlocked handsets it's late as hell. As far as I can tell, iOS 8 will have the same time in beta - aroud 4 months, but it's second year in a row when Apple will release a huge update for their mobile OS, MS releaed WP8 like... 20 months ago?
Let's hope that with "Mobile first" Nadella's doctrine things will realy be going much faster, otherwise WP will be sitting on 3% market share until the next MS CEO at very least.