From Pavel Durov's Telegram channel (t.me/durov):

The day has come. Telegram channels can now post Stories!

Stories on Telegram are more visible than in most apps, because they are displayed right on the main screen. Obviously, we couldn’t let channels flood users with Stories without reasonable limits: this would create too much noise in your Chats.

This is why we designed the Boost system. With Boosts, users can give their favorite channels the ability to post stories. More boosts mean more stories per day for a channel. Every 24 hours users can reassign their boost.

In the future, boosts will also unlock other features for channels, such as custom reactions, emoji statuses or custom backgrounds. We’ll also introduce more ways for channels to get Boosts.

To prevent abuse, only Premium users can boost channels. It shouldn’t be hard to collect Boosts for channels with real subscribers, while those with fake followers may struggle (larger channels need more Boosts to unlock stories).

Let the Boost Hunt begin! 🏹