Pavel Durov announced “the biggest update in the history of Mini Apps”

The biggest update to Telegram's Mini Apps:

Added full-screen mode, home screen shortcuts, geolocation, motion tracking, media sharing, document creation, sending gifts, subscription levels and statuses with emoji.

Examples of new features (available after the update):

Tiny Verse: full screen mode with 3D effects, optimized for computers and tablets

Playdeck: new “Add to Home Screen” option and an interactive Yeti that reacts to the position of the device

Major: added new loading screen and Major Maze mini-game, where you need to control the ball by tilting the phone