New in version 3.11:

- Trending stickers. Check out and install noteworthy sticker packs from the new tab in Settings. 
- Archived stickers. Unused stickers are now archived automatically when you go over the 200 limit. 
- Group previews. Preview groups before joining them via invite link – see who else is in the group before joining. 
- Personal storage. Keep messages, media and any other stuff in the new storage chat with yourself, accessible through the redesigned contacts screen. 
- New improved camera interface (4.1.+).
- Preview bot content before sending (4.1.+).
- Download large media and files 2-4x times faster.

More about this update:
https://telegram.org/blog/trending-stickers