According to to a press release issued by TNA Wrestling, Sting will appear on the 3 hour Impact special which airs on January 4th, and features the TNA debut of Hulk Hogan. Below is an excerpt from the press release:
About TNA Wrestling
"Cross The Line" to TNA Wrestling. TNA Wrestling is the most innovative experience in professional wrestling today. Join the TNA World Heavyweight Champion "The Phenomenal" AJ Styles, Olympic Gold Medalist Kurt Angle, Sting, Mick Foley, "The Samoan Submission Machine" Samoa Joe, "The Boss" Bobby Lashley, "The Blueprint" Matt Morgan, the lovely and lethal TNA Knockouts and the no-limits X-Division inside the six-sided ring of "TNA iMPACT!" every Thursday night (9:00-11:00 PM, ET/PT) on Spike TV.