1. What is the purpose of such news platform from spreading fake news?
We can't really assume that it's fake news just because Telegram didn't make any official announcement. They probably intended to make the announcement exclusive to their investors. Various news outlets also claim they got the info from anonymous investor/s.
2. Is there any report about what is going on with Telegram and its TON? Why nothing is announced?
They are currently preparing for their legal battle with the US SEC. The hearing is set on February 18-19, 2020. It was originally scheduled today but it was postponed by the NY court according to some news outlets.