According to published reports, THQ's CEO Brian Farrell confirmed that Metro: Last Light
will be the title of the sequel to Metro 2033
With albeit mediocre reviews (3.7 TA Community rating and a Metacritic score of 77), the game was evidently "very profitable" for THQ, prompting them to put a sequel into production (according to THQ's VP of Core Games, Danny Bilson, the sequel was evidently green-lit before Metro 2033
even shipped). With this in mind, it should come as no surprise that the announcement of the sequel's official title came in a conference call with THQ investors.
No release date has been set for Metro: Last Light