Earlier, Pavel Durov wrote that Apple, for some unknown reason, is delaying the release of a “revolutionary” update.

The latest update of the Telegram app for iOScontains many new features, especially for Premium subscribers. For example, it allows users to restrict voice messages and even gift someone a Telegram Premium subscription. However, the most notable feature coming with this update is the new emoji panel, which also features new animated emoji. The application offers several packages of "Telemoji" - this is the name of these emoji.
In a new message on my Telegram channelDurov claims that Apple required the platform to remove Telemoji from the update. Telegram's CEO claims that Apple has opposed "better vector-animated versions of standard emoji".
Only Premium subscribers can send telemoji, but anyone can view them in messages.