A long-term modification project for Homeworld2 that aims to "tell the story of HW1 in HW2" and simultaneously bring the game to a whole new level through a plethora of new content, graphical updates, overhauls of current systems and exclusive features.
More data regarding the new Kadeshi feature seen in the previous screenshot has been confirmed. It indeed is a new feature scheduled for v1.82, the next upcoming version in the v1.8x series.
This feature is called the 'Crystal unit system' and uses crystals for Kadeshi weaponry upgrades. With other words, instead of just paying RUs for upgrades you will now have to pay additional crystals when you want to purchase a weapon upgrade. How these crystals can be obtained is yet unknown.