Do you think there will be more unannounced games coming to Switch in 2025?

I say yes, probably smaller games like Kirby Fighters and Rhythm Heaven.

What do you think?

Almost certainly.

Just since the start of 2024 we've had the announcement of Zelda Echoes of Wisdom, Mario & Luigi Brothership, Mario Party Jamboree, Ace Combat 7, Grounded, Nikoderiko, Fantasian, Stray, LEGO Horizon Adventures, Guilty Gear Strive, Life is Strange Double Exposure, Atelier Yumia, Endless Ocean, World of Goo 2, Emio the Smiling Man, King of Meat, Star Overdrive, and plenty more. 

The Switch has a enormous userbase, publishers are not gonna just bail on that many active users; look how many games still come to PS4 despite it having been replaced nearly 4 years ago.

There will still likely be new games releasing on Switch in 2026, 2027, maybe even 2028 and beyond. Perhaps not the latest blockbusters, but smaller titles for sure.

Depends on the S2 launch date. If it launches early 2025 I wouldn't expect much more for the switch.

Edit

I'm referring to 1st party.  

I guess its main games have already released and we shouldn't expect new reveals for it. It feels like the next Mario Party and Metroit Prime 4 are gonna be final exclusive games for it.
Talking about 3rd party, a lot of indie developers will still support the console in 2025 or 2026 but a lot of publishers e.g. Embracer, Electronic Arts or Focus Interactive are likely to stop releasing games on it. While Switch has a big player base, the system's specs are outdated. Therefore there won't be games from some 3rd party companies. The exception is a couple of next Just Dance games and something like that.

I fully expect Metroid Prime 4 to be cross-gen, or at least feature Switch 2-exclusive improvements.

Hoping for Zelda TP/WW or Zelda OoT3D/MM3D collection.

I mean, we just have to wait and see until the next Nintendo Direct to confirm your question.

Anywoo I do believe some cross gen games are bound to happen. Some bigger projects like the next 3D Mario, Mario Kart, Xenoblade are bound to be exclusive to the Switch successor.
I can imagine however the next titles that aren't power intensive like party games, the next 3D Kirby game, Fire Emblem 4 remake, etc to be cross-gen games.

I also think that a lot of current Switch exclusive titles are gonna get some special pathes for Switch 2. Maybe 2017-2018 games won't have such improvements but some later games might get small features.

Or wondering if games with uncapped FPS and dynamic resolution will be maxed during the whole experience due to the stronger hardware. 

Xenoblade trilogy, Bayonetta 3, Hyrule Warriors Age of Calamity, the Zelda games are few games that I think would certainly benefit from it. 

I do think we are actually not gonna see these expected "patches".

Unless, it's a re-release like a BOTW definitive edition or a cross-gen game, most likely Metroid Prime 4 for example.

I'm sure there are a couple of unannounced titles, plus one or two cross-gen titles, at least from 1st party. There has to be a lot more of 3rd parties not yet announced, the Switch has too big of an userbase to immediately jump to the Switch 2.