THQ and 4A Games considers Metro 2033 to be a flawed masterpiece. Yes, in the words of Danny Bilson…"It was a flawed masterpiece". Nevertheless, the developers and marketers behind Metro: Last Light will stand to correct the previous game’s flaws by making the sequel better in every way imaginable and have it arrive on time for a clean 2012 release.
When THQ first made mention of a Metro 2033 sequel last year, they referred to it as Metro 2034. Judging by new domain registrations, though, it looks like they may opt for a different title.