There's a new Empires of the Undergrowth extra level available now! In Baby Sitting, you have an AI-controlled sister colony. They're very plucky, but not that bright. You'll have to make sure they don't bite off more than they can chew and keep them out of trouble! Both queens must survive to win the level. To find the new level, choose "Other Modes" from the main menu, then "Extra Levels". Good luck!
Note: your game client will not need to update for this level to be unlocked.