I think the ICO may be in its way of rolling out and here is my observation:
The roadmap released in the Whitepaper reveals the plan to launch "External Secure ID" on Telegram in Q1 2018.
The login tool provided by Telegram team represents a simple login tool is the first phase of the Telegram ID project, which we will be rolling out throughout this year.
According to their blog, merchants would be able to provide customer support seamlessly by its login tool, accepting payments, or sending notifications of any kind – including account statements, shipment tracking, flight updates, and so much more. The potential use cases are limitless.