If you hover over the compass, it says 'Warp to so and so', so it's basically a fast warp for donators. So ./warp is basically useless now. Or to people who donated for Donators.
Um sure, ok. I can kinda see how it would be a map where the feathers are Aether and the netherrack is Nether, etc etc... Is this some in game item or command that would bring this up? I would hate to think it would come up everytime I open my inventory. I'll be honest. The Original Poster wasn't exaclty helpful in explaining what he was showing.
This is the new /travel command I believe. I am guessing clicking the compasses takes you to each of the different worlds. For example, clicking the compass by the feathers would take you to the aether (if you had the pilot rank). It is donator only, so thank you for posting the GUI so non-donators like me know what the new command does.