X-Plane 11.35 includes updates to the fuel, bleed air, & pressurization systems. While these changes are of particular note for aircraft authors, they are also indicative of our constant drive to make the simulator as realistic as possible. Having more options for aircraft authors makes designing aircraft easier & more flexible.
The new pressurization system models many more options, for example, such as: GPU bleed, left pack, right pack, wing-anti ice supply, and per-engine shut-off valves. Your favorite sim aircraft can use these to customize systems to be even more like their real world counterparts.
If you’re interested in learning about the specifics of these systems, check out the technical articles on the fuel system, or the bleed air and pressurization systems.