One is the so-called "Random ProtoCoin Drop". By simply winning the game you now have a chance of earning up to 150
And another one is the long-awaited Upgrades Reset feature. For 500 ProtoCoins you can now reset all your upgrades with just one click of a button, getting back all the precious SP that you've spent on them. Located in the upgrades menu in-game.
Stay tuned, there's plenty more to come!
PS: Don't forget to update the translations, since we've added a few more terms. Cheers!
EDIT: more ProtoCoin-related generosity - we just handed out 50 ProtoCoins to everybody. All new users will receive 50 PC as well upon registration.