It not any newer than 2007. The 2007 and up ones have a different font. The new font is wider than this. It seems GE has used a bunch of different fonts and number styles.
I see this has a gasket around the FCO glass, so this is one of the newer M-400 R2's after they discontinued them and re-started up the line. This was probably made... Not sure exactly.
The NEMA tag matches the one found on my M-250 R2 door. (Under the Red 17 tag)
And I don't mean on the reflector, I mean around the glass itself. A little ruber gasket enclosing around the glass.