I played 45 hours (not a misprint) of Horror on the Orient Express at Gen Con this year, so although excited to be getting it, I have seen quite a bit of it. Excellent GMing from the team that ran it for us; good fun product. I almost cannot believe that I am still excited to get the material after playing it for 4 days!
I was at the Numenera launch and have a beautiful leather copy of the book beside me now. I will certainly be starting a campaign for this. It is very exciting to see a non-generic-fantasy world. This probably tops the excitement list for me.
13th Age I have group ready to run and have converted early D&D module I1 to run for a group of players. I'll post conversion info when I have run the whole thing and debugged it a bit. Also high on the excitement level.
Also in the pipeline is a short FATE CORE campaign with a different set of players. Set 20 years after the zombie apocalypse, should be some high-octane fun.
And I'm about to put a capstone on my Doctor Who: Adventures in Time and Space game, running now for a couple of years, sporadically. The Doctor has now degenerated back to his first incarnation (Billy Hartnell) and will be dead in 10 minutes. That's about enough time for two more TARDIS trips; one to the alternate earth where the Goblins have drugged the human race into channeling mental energy for their use, and then the finale, where they head to the Goblin homeworld and prevent them from destroying the ability to travel in time (along with everyone who has ever done so or WILL ever do so), and so leave the goblins as the always and forever rulers of the universe. That has me pretty psyched, too.