The airdrop spam got a bit nerfed: Every airdrop costs 2 sparks now, but every hero gets extra start sparks (even mages), plus a few more units have "Sparks for kill" feat. So if you don't use airdrop too hard, you are in a plus ːcool_seagullː
x3 and x4 speed settings in the main menu
Boss details are visible on the global map before a battle
Less lives in shops and rewards, if you already have enough