Says so here. The anticipated strategy sequel has been TBA until now. There’s also a snippet there that “super-commando” Tanya’s back in the game.
“Tanya’s back and better than ever,” said producer Chris Corry. “As probably the most beloved character from this series, you can trust we’re staying true to the Tanya of old while giving her some new toys to play with. For example she has a Time Belt ability that, when triggered by the player, will warp her back to the state (location and health) that she was in a few seconds prior.”