Six Flags is announcing their 2015 attractions on Thursday.
Drupal, (the content management system) Six Flags uses, operates by a system of "nodes" which are mapped to URLs. Knowing this, you can figure out what Six Flags is planning for 2015.
For example, http://sixflags.com/node/16115 takes you to a page with a rewritten URL of https://www.sixflags.com/magicmountain/twisted-colossus/overview .
Knowing that, this is what is coming to Six Flags in 2015.
Over Georgia - Jokers Chaos
White Water - Dive Bomber
Over Texas - Battle for Metropolis
Great America - 40 Seasons
Great Escape - Buccaneer Beach
Magic Mountain - Twisted Colossus
New England - Wicked Cyclone
Great Adventure - Looping Dragon
Fiesta Texas - Batman the Ride
Discovery Kingdom - Dare Devil Chaos
St. Louis - Battle for Metropolis
America - Bourbon Street Fireball
La Ronde - Maison Rouge
Mexico - Sky Screamer
I suspect that the rides at Over Georgia, Great Adventure, Discovery Kingdom and America are a Giant Loop (http://www.larsonint...giant-loop.html)
As I typically do, I've attached the output to show that all this information is publicly available from their website. Just go to http://sixflags.com/node/[num] where [num] is the node id, the number above the URL in the output.