Well on last look these were the models in development.
PRS-5 (Prototype stage)
PRS-9 CAF (Development)
PRS-10 (Prototype stage)
PRS-16 Speedbird GMT (Development On Hold for Movements)
PRS-19 RS Trench (Development awaiting movement)
PRS-21 Dreadnought GMT (Development awaiting movement)
PRS-22 Speedbird III (Prototype stage)
PRS-24 Dreadnought Super Quartz (Development awaiting movement)
As far as schedule I think we will see the ovious ones by mid year I dought any will be released in Q1 (5, 10 & 22). The rest is anyone guees but the recent talk about the 9 is very good as I have waited for this one for years, especially since a silver case may be in the works.