I've seen discussion about this on TPR, but not a lot about it over here.
Thirteen (aka Th13teen) is the new coaster at Alton Towers in the UK (it took the place of the old Corkscrew). It's being billed as a "psychoaster". From what I've seen, it's an Intamin family coaster, with some interesting twists.
[ame=http://www.youtube.com/watch?v=W6OiK_LgBt8]YouTube - TH13TEEN - New for 2010 at Alton Towers[/ame]
A news clip from Central Tonight in the UK. The ride shows the dark ride part with the work lights on, so you can't see any of the effects.
[ame=http://www.youtube.com/watch?v=Xcye3X-ugtU]YouTube - Th13teen, Alton Towers Central Tonight[/ame]