"Proposed", but this would mean only Tees Metro services would get it.
Northern Rail have no intentions of stopping at DTV other than the one weekly service on a Sunday.
I sent an email to them about it, 3 weeks later they reply:
"Dear Mr Clark,
We currently have no intentions to stop at Durham Tees Valley airport for services other than the one that is currently placed. Stopping at DTV would mean a hefty workload to try and re-position train timetables to allow the one or two extra minutes necessary, meaning that access rights could be constrained.
Although there are no intentions of changing the routes, I have forwarded your E-Mail to the appropriate section".