Considering they're still hiring for roles like character modeler, I'd say even 2021 is extremely unlikely. 2023 maybe.
Possibly. It depends if they can salvage anything at all from the work Namco was doing or if they're truly starting fresh. Assuming they're starting from a completely blank canvas, 2023 would be about a 4-5 year development cycle which is a little on the long end. 2022 seems like the safest bet to me.