NEW FEATURES

• Smoother graphics.
• Can build double paths and peeps won't be lost.
• Better ride creation system for more control building roller coasters.
• Sweet Scenario Editor lets players share their parks, rides and scenarios with friends.
• Trade creations with other Tycoons worldwide on www.rollercoastertycoon.com
• Peeps are smarter.
• More shops and stalls.
• Detailed park map.
• New blueprint (or should i say whiteprint) when building a ride.
• Ablility to compare rides with the pros.
• Higher height limit for rides.
• Improved AI.
• New Six Flags scenarios. (5 of them)
• Alternative miniature railway vehicles.
• Rides can have a station platform for the entrance and a seperate one for the exit.

New Roller Coasters

• Choose from five Six Flags locations to build a world-class theme park.
• Arrow 4D
• Djevau 
• Intamin box track
• Twisted impulse

New Rides

• New monorail cars.
• Alternative miniature railway vehicles.

New Shops & Stalls

• First aid stall. 
• Ice cream stall.

New Theming

• Able to stack landscaping & theming objects.
• Various new trees (new palm trees).
• Letter shaped objects. (one screenshot has Golliath spelled out in some sort of themeing object)
• Cogs & gears.
• Metalic walls.
• Themed entrances.
• Rides can be built through some scenery.
• New fences & paths.
• Roofs.
• Buildings can be supported by columns.
• Windows in walls are now in the themeing box.
• Fences (or walls) can be placed on bridges.  
• Stairs.
• Covered paths.
• New sand tile.

Here is a list of rumors I have heard. Some of these things may be true, some may not be.

RUMORS

• Parking Lots.
• A.T.M's.

To see pictures of RCT2 click here.