Drop pods are well over due - but why a new kit? Does not make sense to design anything new, just whack in a chaos sprue in the existing product. Of course if there is any significant wait on the 'new' kit, people will just buy the loyalist one and tart it up with a sprue anyway.
It seems to me that putting in specific units for 9 different legions is well above the usual scope of a typical GW codex and simply won't happen. It seems likely that the HQ chioce or legion you pick will have generic rules that will apply to your force and give it the legion flavour, at least thats how I view it.
I am the White Knight!