The recently revealed Generations Nightbird (reworked Chromia) and Powerdasher Zeta (reworked Brunt) have just been added to TakaraTomyMall for release September 7th... which is really surprising that they are being listed only a couple of weeks before they are released.
Each one is 4,104yen (about AU$55-60), which is a bit expensive, but becoming the norm for TTM exclusives lately.