These rumors come from Screamscape.com:
Late 2009 or Early 2010 - Star Tours 2 - Rumor - (4/25/08) Screamscape sources tell us that we should finally expect to see Star Tours shut down by late 2008 or early 2009 in order to begin work on the massive overhaul it will receive for the Star Tours 2 concept rebirth. Apparently we shouldnít expect to see it reopen for close to a year or more since this is said to be a complete overhaul and not just Disney dropping in a new ride-film.
2010/2011 - PeopleMover v3 / Tomorrowland 2010 - Rumor - (4/25/08) From what Iíve been told, a new future for Tomorrowland is finally on the way. The new Star Tours 2 concept is apparently just the first phase of a larger makeover for Tomorrowland. Once the new version of Star Tours opens the plan is to demolish the old Rocket Jet Tower to make way for an all new tower that will once again house a next generation Peoplemover ride station as well as the base unit to return the Astro-Orbiter back to itís rightful place high in the sky on top of this new tower.
Who knows if these are to be true but we all know that it needs to be done now.