It's gonna do one of two things jus coz Ridley's involved; intertwine with the prequel lore or play it safe and be totally unrelated to anything.
I think it'll stay away from the main trilogy for sure or hit Resurrection far flung timeline Territory if so..could do a cool aged Ripley 8 episode..the Xenomorph got to Earth etc that way. Prefer prequel era setup for a third film but whatever