Now, it'll start at 7:00pm and be aired on FOX Sports Plus Arizona.
From a press release by the Suns:
** SUNS MEDIA ADVISORY **
TIME CHANGE FOR SUNS-ROCKETS GAME ON FEBRUARY 4
PHOENIX - The Phoenix Suns' home game against the Houston Rockets this Thursday, February 4, will now start at 7:00 p.m. (Mountain Time) and be televised by FOX Sports Arizona Plus. The game, previously scheduled to start at 8:30 p.m., will no longer be carried by TNT.
Well, it is what it is.