TASS: Military & Defense - Russia’s 5th-generation fighter jet named as Su-57

Roll promotional video with cheesy music

The Sukhoi fighter jet, has had its name updated from T-50 (Basically the company's internal designation meaning the 50^th delta wing model) to the official Russian military designation Su-57. (Also here)

I don't think that this means a whole bunch in the greater scheme of things, but have a promotional video for the 5^th generation fighter.

It doesn't reflect much in the way of a change in the status of the aircraft:  It's still a limited production prototype, and the intended final engine is years down the road, but it does make for some decent videos.