Well as of right now, I'm not surprised at them not saying anything about carsland or Starwars Land. There has to be something worth announcing for them to announce it. They also would have to factor in any potential cannibalization that may occur if the do announce something.
Not to mention
D23 starting to seriously lose it's prestige internally, if evidenced by the fact they are literally giving away memberships now.
With Star Wars Land, Quite frankly, Disney hasn't owned Lucasfilm and the Star Wars rights long enough to really put together a comprehensive idea on how to best expand upon the licensing within the parks. There may have been some blue sky ideas sitting on a shelf, but definately not anything in a place ready to be announced.
Carsland in Florida... I'm personally still not convinced it's ever going to happen. RSR is basically the same core ride as Test Track with different theming and a few additional features... but I'm not sure the differences are enough for Disney to think it's worth spending the money and building it just down the street from the other attraction. It would be almost like them taking the Indy Ride from DL and putting it in the MK, even though Dinosaur is the same attraction w/ a different theme.
Then you also would have the fact that it would undermine one of the big advantages and goals of the Existing Carsland. Burbank has been trying to elevate the
Disneyland Resort into a full fledged destination resort, and not just a place that attracts local and regional guests. Obviously, they don't expect a 7 day+ resort like they have in Florida, but they are hoping for a solid 3+day resort, and Carsland was placed and positioned to help be a major draw to help differentiate the California Property from the Florida Properties. To build yet another clone in Florida would once again rob California of a true unique mass-appeal draw..... and I'm not entirely sure if management is that stupid.
And then you have the straight up internal cannibalization issue. New Fantasyland has had mixed results from some of the rumblings I've heard (ie. not as strong a draw as was expected). You have the Mine Train still to open. the Avatar project is still preparing to break ground (with all sorts of mixed feelings from the disney fan community)... And Disney is continuing to work towards pricing themselves as a "once in a lifetime" or "Once every few years" destination. If Disney announces something with as much rumor traction (wish I believe is mostly based off wishful thinking and not based on any legit sources) as Star wars or Cars in Florida, They could very likely shoot themselves in the foot by convincing large numbers of guests to hold off on their visit another couple years until these areas open..... thereby hurting any return they'd see from New Fantasyland or Pandora.....especially with the construction timetables Disney works on.
Contrast that to Universal lately. They've been waiting until construction is well underway before they make the official announcement. This leads to a shorter window between mainstream media buzz and the attraction opening. They've also been pretty consistent with new things lately, Which when combined with their much more affordable pricing, make it less likely that someone will decide to put off their trip for a couple years until the next big opening.
I would like that too but what do you want to hear? "Yes we are doing Star Wars Land" That wouldn't be enough. Then rumors would still surface about where @ DHS, what attractions etc etc. So I don't think them saying just that is going to satisfy us. At least it wouldn't. I am not just saying this, but I really think they are up to something, I just get that feeling. With all the rumors floating around, its just too weird for something not to be going on. They might be doing something REALLY HUGE and don't want ANYTHING leaked out no matter how much they tell us, little or alot. 
