Well its finally been announced, NL2 will release later this year!! They also released a new website
www.nolimitscoaster2.com. Many new screenshots of the game, looks frickin great.
From the site:
I hope all of you got the good news today that NL2 will be released later this year. What follows is an incomplete list of the features slated to appear in NoLimits Coaster 2:
Dive Machines: This long await train style will be in NL2
Hidden Tracks: Something we saw on the release of Scream Machines will finally be added to NL
4D Coaster bogie and car: This is a new train and car style as well
Prefabs for 4D coasters will be made available
Optional railing lights (the color can be customized)
Station lights (will switch on and off depending on the time of day)
Older coaster styles have been improved with increased detail
Vertical rotation switch track (shifting switches are available, too)
Graphical user interface of editor (OS independet GUI, tab based work flow)
Multiple viewports in editor (optional)
G-Force comb in editor (updates in realtime, works similar as radius comb)
Track nodes (position, roll and segment border nodes are independent from each other)
Finally I hope this holds true! Its been a long wait....
Well... at least Theme Park Studio starts beta..... soon..... 
