Not throwing at the combine is not a big surprise. However, holding a workout before the combine is a bit rare. Typically top quarterbacks will wait to throw at their school's Pro Day or hold a private workout closer to the draft.
"He’s been great so far,” Whitfield said, “and we’ve decided we’re going to show him off and get him out there before the Combine."
Holding a workout this early tells me they are confident enough in Newton's mechanics to show off to scouts. Looks like they are also trying to generate some early buzz.