Btw. are there any rumours if there will be new game set in uncharted universe coming out or if the team has pivoted to something new and possibly surprising? I guess the next game is last of us 2 but they would have something already in works for time after that?
Apparently, rumors say that a brand new "secret" San Diego studio that Sony is agressivley staffing will take over the Uncharted franchise [including devs from ND]. Team is still under wraps, project is unknown, but lots of devs are positing how they are moving to San Diego to work for PlayStation. That would be a nice safe project for them for their first game, hopefully with totally different cast [I vote for Nathan & Sam's mom and her adventures before they were born]. This would free up ND to move to a new IP after TLOU2.
As for Sony Santa Monica, Corey Barlog has said that he was very much pushing for a new IP that he was dreaming up for years. I presume Sony will give him greenlight for that after Nordic GoW arc is done [they cut the GoW story in 2 halves after realizing they wrote too much for a single game].
Guerilla Games has recently moved to new offices and they wen't on a hiring spree, with a goal to double the team size [to 400+]. The reason for expansion is not to enable full production on multiple titles, but to
finish up games much faster than before.
By the look of things, Sony is not aiming for expanding teams to handle multiple projects [that failed with ND, and TLOU1 team had to merge with the Uncharted team to finish up U4, and SSM 2nd team spectacularly failed leading to
mass layoffs and merging of the remining devs to the GoW [pre]production effort]. They just want to make games faster, which is not an easy thing to do when they are aiming at the absolute peak production values, storytelling and technology.