Channel and group creators can now prevent their subscribers from taking screenshots, saving photos and videos, and forwarding messages. To enable copy and forward protection, go to your chat profile and select Group / Channel Type> Prevent Copy.
In addition, Telegram users can delete the history of messages in a particular private chat for a specific day or period of time. To do this, you need to open the calendar and select a period for cleaning.
You can also now manage active Telegram sessions through the Devices menu in the settings. A new button in this section will allow you to instantly enter the messenger on your computer or through a browser.
You can read more about the innovations in blog Telegram