I don’t know anyone who speaks Ukrainian, unfortunately. If I did, I’d ask them to double check the video above and confirm the translation made by one of the users over on the LastLightForum.
According to that multilingual fan, the video confirms a number of new details about 4A Games’ sequel to the brilliantly atmospheric Metro: 2033. I suggest that you think of this as an unconfirmed report or a rumour until someone from an official source says something in a language we understand (which will definitely be sooner than I can learn Ukrainian).
Apparently, there will be a PlayStation 4 port, probably including a copy of Metro 2033. Last Light is scheduled for release on the PS3, Xbox 360 and PC on May 14th in North America and 17th in the UK. 4A Games is considering a release for the multiplayer portion of the game separately via digital distribution channels like PSN and XBLA.
The game is said to be finished and the team is now working on five single player DLC story missions that will approach the narrative through the eyes of other characters. This was not content cut from the game and work started on it after the main game was wrapped up.