Stable iOS version of 2.90 is now out!

2.9061 which fixes app crashing at the end of games (from 2.905) and bad image preloading (from 2.904) is now out.

Be careful about accidentally hitting the Battle button twice on the Challenge screen though. That can still either land you in a game against yourself or in two games at the same time (one will be against an opponent which you won't actually be able to "get into" from your client and another "waiting for players" which you will see in your client and it will not let you leave without rating loss). This bug was fixed after 2.9061 was submitted.