The simplest explanation is usually the right one:
1) spent time developing planet coaster / console ports of elite
2) there is no dedicated "elite surface engine folks", they're cobra developers, or even users - and the core cobra engine is developed by another team entirely responding to feature requests from elite and planet coaster teams).
3) Ed Lewis mentioned a few times that the Elite team is he thinks "the biggest it ever was now".
My advice - brace for impact, and not a good one. I think we will hear about QoLs and new mechanics. There will be usual "pie in the sky" talk from Braben and maybe Sammarco, but "no etas, no guarantees". And of course THE THARGOIDS OMG THE THARGOIDS.
I would LOVE to be wrong about this, I really would. Because I will pick my vive headset (helmet?! imuurshionnn!

) the moment EVA / atmospherics appear and go exploring!

Sadly I am rather preparing to put away Elite for at least year or two knowing their official plans for not one but TWO new franchises by 2019 (so jurassic coaster (pardon, park) and something yet unannounced). We will see. Like I said I am willing to cut them some slack for the supposedly tough business decisions made during horizons. It's only waiting game is hard, and its been two frikkin years now. </vent>