Hey there Sean20!
I'm really sorry, but it's unlikely that Skyline will make a return to the S10.
However, you can probably download it and pop it in your Notifications folder in your Internal Storage. Doing this should let it show up in the Notification Sounds.
Hope this helps,
Tom 🙂
(Edit - I found the sound you're looking for, do a Zedge search for Skyline 🙂)
