Quetzal Pinball's Captain Nemohttp://quetzalpinball.com/menu/project
This project's being done in Spain, and limited to a run of 30 machines with a pricetag in the neighborhood of $5500. One of the most interesting features is an LCD embedded right in the playfield. There MAY be a couple pre-order slots still available on this, but after this weekend's Expo, I bet those will be gone if they aren't already.
Predator Pinball by Skit-B Pinballhttp://www.skitbpinball.com/
The latest details can be found here. This one's going to be a run of approximately 250 machines, in the $5000 neighborhood. If it were a video game, it'd be rated "M" but they are including a "family" setting option. You can still pre-order these.
Update 10/25/12: Predator is reportedly SOLD OUT.
Ben Heck's Zombie AdventureDesigned by John Popadiuk and Ben Heckendorn
People have been hankering for a zombie-themed pin. This one is kind of wacky with a very retro feel, so it might not satisfy what many people have in mind, but it's certainly unique! Like Nemo, it incorporates an LCD screen. Pre-orders are closed.
Circe's Animal HouseHeighway Pinball
Quite a unique theme, based on mythology and the theme has a very pub-centric element. The owner has created a thread where you can comment and post questions. You can still pre-order this one.
Update 10/25/12: Heighway has punted the Circe's table in favor of Full Throttle, a motorbiking theme of some sort.
I saw that most of these people are at the Chicago Pinball Expo this week, so hopefully we'll see a lot of new information come out of that. The Predator pinball team will actually have a machine present at the expo. Eagerly awaiting pictures!