It’s out. Some people are noting minor bugs, particularly when they attempt to install it along with other mods (which modder Gutekfiutek does not guarantee will work), and supposedly it was written for the last but one update of the game (though I haven’t noticed any problems on the most recent build after a few minutes’ play). But it’s out. If you play native Mount & Blade: Warband, you have absolutely no excuse for not downloading this right now. Unless you’ve got it already. In which case, what are you reading this for?
You can find the thread for Polished Landscapes (the Warband release) on Taleworlds’ forums here.