@cubik_msk Marketing and player retention mostly i guess.
Use the new version as an excuse to have people that have been away for a while to "try things out" and have regular players playing longer/more for at least a couple of days following the update.
if you followed the news about Game Center Betty at the beginning of the year, and would like to donate to the arcade, this is a great way to do so.
A handful of musicians including myself put together a remix EP to raise funds. 100% gets donated, check it out: