The biggest thing engine wise is NMS:Beyond is going to be getting a big graphics engine update and moving to Vulkan API. This not considered one the 3 pillar at all just a byproduct of the VR Upgrade their doing that is part of one the pillars. The 2nd big Pillar is more enhanced Multiplayer sort like MMO Style but not like forced / full system that would make people quit. 3rd one seems to be 100's of smaller and bigger game updates and changes.
Either way here is the Beyond Trailer actually not containing a lot of spoilers oddly enough.
Sean Murray Interview with IGN
Either way here is the Beyond Trailer actually not containing a lot of spoilers oddly enough.
Sean Murray Interview with IGN