Not really that excited, especially since we already have the official specs and pictures. And frankly, because of the following:
I have the S10, my best friend just got the S21 FE, and it's not about the S21 being a small upgrade - between the two I actually prefer the S10. Thanks to the SD card I've got 384GB of storage on that thing, I still use the headphone jack despite having wireless headphones, and the Snadragon 865 was the last efficient Qualcomm chip before ARM went stupid trying (and failing) to chase Apple's performance with the prime inefficient core clocked balls to the walls. So the battery actually lasts longer on my 1.5 year-old S10 than my friend's new S21 FE. I also use Samsung Pay exclusively - I don't carry my wallet anymore, so not having the option to pay at chip-only terminals in case I run into one would make me anxious.
Also, I really like the S10's design so much more - it was the last Samsung phone with a legitimately premium feel. I like even looking at that thing. The newer Samsung phones are plasticky and their flat screens just don't look as cool anymore. The bezels actually grew since then. I also like the camera cutout in the corner where I rarely notice it, rather than seeing it in the middle. I think the screen on the S10 just looks better, and the fact it's the higher resolution one is just icing on the cake.
So, I feel like newer Samsung phones actually take features I care about away, and don't really offer anything interesting enough to make up for it. The performance improvements are small and irrelevant as I never feel like my phone isn't fast enough. And if I did, the S21 wouldn't change much as the performance gap isn't big enough for one phone to feel much snappier than the other. The camera is just good enough for anything I can imagine. I will eventually pull the trigger on a phone that does camera much better, maybe amazing zoom or some other groundbreaking features, but so far the differences have been tiny since the S10. I like the cameras on the Ultra, but I don't want to carry a brick. Maybe if a similar camera setup comes to the standard-sized S series device I'd be interested, but we're not there yet with the S22.
Honestly, if my S10 breaks, I'd be sad. The S22 looks like an ok backup plan, but there's no way around feeling like I'm downgrading in many ways. Maybe I'd start looking at the foldables to at least have something that pushes the envelope again, even though they aren't there yet.