LBZ/LMM switchable tuning is in development. Unfortunately so are many other features that also consume development time including a bunch of updated OS's and all of the 2009 OS's that have just been released. In the coming weeks Ross will add support for another 20 or so OS's.
At this stage Ross and Paul have 90% completed LBZ/LMM full flashing. Their biggest hurdle is that they live on different continents and getting them together is difficult due to their other development projects. The switchable part of the puzzle is now solved with the release of switching via V2 for LB7 and LLY. Unfortunately there is no suitable pin on the LBZ/LMM ECM to hardwire a switch, so you will need to switch via V2 when it's released.
Once full flashing is done, then Ross can work on the custom OS mapping for development. This will then move into testing. How long this process takes depends on lots of factors. However, once the test OS is finalised, it could be another month or 2 (or more) to port the development over to each OS used for LBZ/LMM - development isn't a simple process.
Cheers
Cindy