I'm glad it's finally out on Android so they can start working on the iOS release. The engine shoulda been released on iOS first though. iOS players have waited over a year for the last 2 updates each. Still funded the game and continued to play (keeping it running).
Android users have not been waiting as such, and have not been funding the game, yet we find ourselves less prioritised by OTM.
Hope they make enough money from the Android players, for the loss of iOS players to be worth it.
Exactly my thought
My thought is that OTM has only made a few of the areas and, because they began with the low level areas, it makes sense to go ahead and release the engine to Android. Think about it like this: the new engine is a project. They've gotten the tough part out of the way with coding, animations, etc. so they're now working on putting all of the areas, weapons, and gear into the new engine. They've finished up the beginning segment, so there's no reason for them to withhold it from the Android users.