I really loved the first game and the demo for the new one looks really good. The first game has nothing to do with the new one but it's ok. I might buy it tomorrow when it comes out but it's a Bethesda game.
The new Prey looks interesting, but i don't like how Bethesda screwed the studio who developed the original and was working on Prey 2 (which also looked good), hell, the whole series in general has a very screwed up development history dating back as far as 1995/96, so maybe it's just a curse.
According to Eurogamer it clocks in at around 20 hours which is good because I was a bit miffed at Dishonored 2 being only eight fucking hours long and costing $60.
I played the demo and thought it was a lot of fun. Never played the first Prey, but the demo left a really good impression on me that I'm considering buying it. Using the GLOO cannon to platform was silently encouraged and exploration of all the areas feels really rewarding.