The new features are: Link history, E2E encryption, Share documents, Fast link copying and Selective clearing of chat history.
In the next conversation you could see how Telegram “only” shows us the last million messages of our own.
Two and a half years ago Telegram was launched and it seemed to be impossible to reach this amount of people in such a few years. Now Telegram is handling 100 Million Active Users
Telegram is handling 10 Billion messages per day, this is a very huge number because on December 2014 only 1 Billion telegrams where sent every day. The cause of this is the big growth of telegram’s users in 2015, tenfold the amount of the previous year.