They have to top the excitement from NEXO 1 delivered in some way.
I wonder where they got that tank, at first glance 20 liter is not exactly common. (As carbon, in steel it is.)
From the video:
Nexo 2 will use jet vanes once more.
Modular design, by sections.
"Clear the tower, then
No more prepressurized tanks, adding a 20 liter 300 bar helium tank. ~20kg for the COPV tank itself. Independent dynamic pressure regulation for fuel and LOX, they need to be ~1 bar apart.
O/F ratio at 1.3
Not a constant tank pressure, constant injector/chamber pressure. Same fuel and oxidizer flow at all times.
Exiting times, this starts to look like a real pressure fed rocket.
Lets hope for more launch and less anti ship missile this time.