So additional rumors - that money from cancelled theater plan in MK is going to some expansion instead in Adventure land - one rumor has it as a clone of an existing ride to be put in. I take this with a grain of salt.
As stated above - rumor of tron remake of speedway with electric cars has been noted - and I will add Martin at WDWMagic.com says it is close to an option on the board to do. So this may not be totally fluff. Again hang on to that salt shaker
edit to Add - MagicFeather is hinting that the money from cancelled theater project is for balancing load rather than adding to MK....no idea what that means