3: Horizon Zero Dawn sequel
Guerrilla Games have hired a number of staff this year and it's clear that they are working on at least one new title. One of these titles is almost definitely their follow up to 2017's critically acclaimed Horizon Zero Dawn which sold 7.8 million copies in its first year.
Although the only concrete piece of information we have are job listings by Guerrilla Games, it is pretty likely that GG's follow-up to HZD will be ready around the launch of the 9th generation.