Linear drains soon to, if not already, replacing the traditional shower drain. They are sleek and simple, but don't ask me why it is called a "slot" drain because sounds super-duper-dirty-gross and not something I'd touch with a 10-foot pole, in my opinion. I think we would all rather call it a "linear" drain. Much safer.
These babies are beautiful, but when spec'ing you should ask your preferred plumber if they've done training on it and have installed one before.