I can't wait to go down there. In case anybody isn't aware, you can get an Orlando Flex Ticket. It allows you into:
Universal Studios Islands of Adventure Sea World Wet 'n Wild Aquatica Busch Gardens Tampa
for 14 consecutive days for only about $285 per person (taxes included). You only pay for parking once a day and can move from park to park. For our family that works out to almost 1/2 of what it costs us to go to Disney. I'm thinking of planning that for 2012.
In the teasers and animations, they all show the cheetahs running through tall green grass. Most people associate grass as being green, even though it may vary. This is the symbolism of the green track IMO. Perhaps they will discuss the theming details in the future more in depth as they are more revealed throughout the construction.