Neither the Tomorrowland nor the Frontierland expansions are anywhere near moving forward. Mr. Lutz focuses on some of the developments being explored for Frontierland but it wouldn't surprise me if there's some action in Tomorrowland first.
There is a Tron attraction being developed for Disneyland that some folks are quite bullish on. If the film is a big hit this December, the project is guaranteed to gather more steam.
The problem with all of this is that TDA isn't looking to move forward on any major projects in Disneyland Park until after Cars Land is completed in 2012. A lot can change in eighteen months. There are no solid plans right now and many options are being developed and explored.