The new regular seats don't have the additional bolstering that the next gen seats do that stick up from the bottom portion, hence the questions about still folding flat.
I got some details from my DS who seems very sympathetic. Firstly he has no information about what is happening with my car but he could tell me that the car would be shipped with the original nappa leather seats. The only information he had on my delay was because of the next gen seats so he was also at a loss to understand why my car is still held up if it doesn't have the Recaro seats. Secondly, it will definitely not have the heated steering and he is still getting a strong indication that this feature will not be retrofitted. He is still trying to find out whether this is a policy decision (so potentially changeable) or a technical issue.
I've decided that given the indefinite nature of my car delivery that has been building for 21 days and that will come without the new seats (for now) and without the heated steering wheel (no retrofit) and which seems to have some unknown flaw that is holding it up (doesn't bode well for the future) - I'm going to cancel and re-order and join Lola in the 2015 sweepstakes. Haven't pulled the trigger yet but will consider over the weekend.