Do you have any plans for TBC Beta / TBC (2.5.1+) version of this awesome addon?

We'll see when I get TBC access or TBC goes live. I'm not in the beta, so I can't say. All depends on the route Blizzard has taken with their new TBC UI.

What I can say is that I'll most likely will convert either this, or my similar (yet even cleaner loooking) fullscreen map shrinking addon for retail (MapShrinker) to work with TBC. Which one comes down to what code Blizzard used as a base for their TBC worldmap.

PTR (Classic) have been updated to 2.5.1 and is for all to test.

https://tbc.wowhead.com/news/classic-ptr-now-updated-to-burning-crusade-classic-pre-patch-322235