Battlemode is also different. You set the keys on 4 different hotkey bars in the options screen.
Which leads to the next thing, options screen is totally overhauled to have all the weird RO functions put together in one menu when you press esc.
All of this is awesome. Btw recently on kRO they added short descriptions of each buff and debuff supposedly. I bet that'll be on renewal client for us soon enough.