He mentioned some secret updates as a possibility. Of course we will see, nothing is certain at the moment. I think he decided to move with the partial relase, because he see how much work his team has with it. And he and the team are aware of the loong time it takes already.I guess it depends on what he means by that and what's going to be included. Objectively it would make sense to release the tech update without all of the old non-rig-system art and to move forward from there on. Then again, it would exclude a lot of content - unless DC has reworked more assets behind the scenes than one would have thought.
Last but not least, it'll be interesting to see if those people who claim the tech update was pure vaporware and say that DC is never going to release another update are going to complain about the lack of content (of the update they said would never happen) anyway.