If he was quietly suspended for another doping violation, I would suspect that it would probably be a pretty lengthy one given his previous issues and instances of leniency. That, and USADA would probably like to make an example of him. So even though it is entirely possible, my gut instinct is that is not a suspension-related absence. Hell, I don't even know if he's even in the fighter pool at this point.
He could be hoping that enough fan support rallies his cause where he gets a huge payday in a title fight, but given the rise of Gane and the UFC's recent history of being less acquiescent than in the past, I seriously doubt that will work in Jones case. He does not put up huge numbers like Conor does and I am not sure how much the UFC is willing to risk on Jones not screwing up again.
Honestly, he might not be happy with the gains he's been going for and wants to cycle a little more.
In any case... shit or get off the pot. I want to watch fighters fight, and if they don't want to do that, I have no love, time, or use for their PR foolishness and social media games. I'm not their friend or family, I'm not their business manager, and I'm not getting any of their money.