So...
The official Skylanders Game Twitter sent this out today:
"Abracadabra! It's Cobra Cadabra! There's no one quite like this Magic Skylander! Have you spotted him?"
So, keep your eyes open...They usually do this right AFTER the first few have been located...Perhaps, it is pre-emptive this time? I don't think he is coming solo like their daily tweets, so I am inclined to believe his arrival will coincide with some others (cough, Blaster Mind, Trail Blazer, etc).