I sent an email to the support folks late this morning, within a few hours, I received an email back from "Seth" directing me to this thread. That is outstanding communication and concern from Natural Point. It is very much appreciated and I'm positive that it will prompt me into an earlier upgrade from my TrackIR 4 Pro to the latest model. Many Thanks for jumping on the 64 bit band wagon, Seth.
I just spoke with one of our lead developers, and he confirmed to me that TrackIR development will be starting up very soon. 64-bit application interoperability will be the first item on the list.
Thanks for your patience. We'll hopefully have something out to you guys to play with pretty soon.