A temporary page has gone up for the next Transformers Legends game event by Mobage. Next up is "Day of the Dinobots Part 2", which sounds as though it will feature a whopping five bosses - all five Dinobots, Grimlock
. Episode characters are also implied to be Ratbat
. The event is currently listed as running from 4 June to 11 June, but this might be subject to change.
Check out the temporary page here