Pavel Durov, the CEO of Telegram, told a fan on Twitter this week that the company "definitely" has plans for such an app. However, that's basically all we know at this point. He did not reveal any more details about their Windows 10 app efforts, including a release date. We will keep our eye out for any more news on the Telegram Messenger app for Windows 10.
Thanks to "Kiba85" for the tip!
Source: Pavel Durov (Twitter)