As for what the game is about, here's a summary description:
I played a prototype of Die Staufer with HiG's Georg Wild and Jasmin Weigand in mid-2014, and the short explanation of gameplay is "This is 100% a Hans im Glück title, one you could recognize even with no cover on the box". Okay, that doesn't describe the gameplay either, but it does convey the spirit of the game, just as you could tell that, say, Egizia or Helios were HiG releases just from the gameplay.
Not knowing what might have changed from mid-2014 to now (and realizing that I've forgotten certain details since that time), I'll keep my description at the 30,000 foot level: Six regions comprise the playing space, with players attempting to gain majorities in the regions — but only at particular times since not every region scores in each round. In fact, most regions don't score, but you'll still want to be active in them due to other gains that you can make, as indicated by the tiles placed next to the regions. Players draft tiles from the small board shown at right, with some incentives to take tiles that have been on offer longer than others. The large marker sweeps through the regions, returning meeples to their owners for use again on future turns.
Wow, my memory is really shot in my old age or I've just seen too many games in the past few years and they now obscure one another like multiple plastic films in front of a lens. I used to be able to recall every detail of every game, but that's what I have for now. Also, things might have and probably did change with the design as Georg and Jasmin were soliciting all types of ideas and trying to figure out everything beyond the core of the design. This is how you get a game to feel like a Hans im Glück release, after all: Work on a design endlessly until it presents the play experience that you want it to have.
• On September 18, 2014 HiG and English-language partner Z-Man Games announced a new look for Carcassonne: "With new amazing cover art by our very own Chris Quilliams and beautifully designed tiles by Anne Pätzke, Carcassonne will appeal to newcomers and die-hard fans alike. Fear not, the back of the tiles remain the same, so this edition is fully compatible with previously released expansions."
So the front of the tiles is different but not so different that it should make a difference during a game — that's the promise anyway, although it's unclear why you'd risk an uproar among fans of the game by making such a change unless you're really gaining something from it. Hmmm. A Carcassonne fan site on Facebook pasted old tiles into the new image to show what the game might look like should you combine old and new down the line:
This new version of Carcassonne, due out in time for Spiel 2014, includes both the River mini-expansion and a new expansion titled Der Abt (The Abbot).
• Other items coming from Hans im Glück include the second title in its "Carcassonne: Around the World" series of standalone games: Klaus-Jürgen Wrede's Carcassonne: Gold Rush. Here's a summary of gameplay: