The next big update will likely be to No Stars in Sight.
In the event this changes, consider this a "speculating about the future" blog post.
"Hard scifi" rules have always been a bit of a side-show in the scifi skirmish communities. Stargrunt 2 paved the way and currently All Tomorrow's War holds the throne.
Upon its original release, No Stars was pretty well received for feeling "realistic", having innovative ideas and being easy to play.
Conversely, it was also felt to be "busy" with a lot of things to keep track of and with too many special cases and exceptions, particularly as regards equipment.
The first step is obviously the improvements that was brought along in NEIS 2nd edition, such as getting rid of permanent stress and simplifying some of the mechanics.
However, one of the things I would also like to do is try to push up the scale a little bit: From the reinforced platoon to a half company or even a full, light company of troops.
I am not completely certain this will work, but I think if the design can be made to work at that larger scale, it'd be very attractive to a lot of people.
"Mass Skirmish" is popular with a lot of 15mm players who want to be able to field several vehicles along with a handful of infantry squads.
There were a lot of added systems in NSIS (hacking, the various alien critters etc.) that need to be carefully evaluated for simplifying or rebuilding.
The biggest worry is that compatibility between NEIS and NSIS may end up being broken a little bit.
I don't know if that's a disaster in itself, as long as the core mechanics are similar, but it does bear thinking about.
If you are experienced with the existing NSIS or NEIS rules and are curious about this new version, let me know and you might be able to help test things out.