Samsung showed off the Galaxy S25 Edge at Unpacked

https://imgur.com/a/wRQ8ZNF

While they didn't share any details on it, they teased it at the end of the keynote and also had it in the demo area.

/u/FragmentedChicken snapped the photos I shared in the album above. They're not the best quality since it was really crowded but you can get a pretty decent look at it.

This is likely the long rumored Slim model by the way.