Haven't seen any info on this and I'm curious.

Classic and TBC clients. I wonder if there will be 2 clients, one for each or if they are both on the same client.And If there will be 2 clients, can I easily port my keybinds and macros over? These are the real questions. I know addons will need to be updated. Maybe some will work in both, who knows.I'm just curious. Having to keybind everything again, make macros again and changing all the interface and graphical settings to my liking will be a freaking pain.