Having seen the internal briefing for the changes at the end of January, changes are nowhere as drastic as the last round of service changes.
However there are evening service reductions from 4th January (to last until 30th January according to the notice). Timetables are online apparently (although I haven't looked). Two things stand out for me, Nexus contract 33 (reduced to hourly) and the X22 (suspended temporarily).
RE: Go North East : Upcoming Service Changes