Calling it now: Playstation 6 will launch in 2 forms: A moderately-powerful standard PS6, and a much weaker handheld version.
I had little doubt that Sony will launch a handheld SKU in the not distant future. When the SteamDeck launched, I surmised that it could be in the form of a mid-gen PS5 SKU. But with the terrible pricing trajectory of this generation and the rumors about a Sony handheld being early in development, it's safe to say that it's not coming this generation. The current generation showed that chasing high specs may not be worth it anymore,
Microsoft will beat Sony to the punch with an optional Xbox (or Xbox-branded PC) handheld, because it can potentially run Series S apps (or PC apps) natively without any extra work form developers. But I think it'll be too expensive and production limited.