I am not so sure that it has been released just yet. The few people that mentioned it might be part of a soak test. Either way you can't really FORCE it. You can try all the things that people will tell you that work like keep checking in the update status, try checking it on wifi, clear your cache partition and check again, restart your phone and keep checking. Not sure if any of these actually help or if it is coincidental when it does work for some. Just be patient it will come.