User blog comment:G0LD3NF1RE/Dawnguard encounters issues with Playstation/@comment-4248410-20120907234104/@comment-3202167-20120908061918

I just noticed you have a Batman avatar O_o

While yes, all that is going on, I believe it was always work in progress, meaning they had atleast 3 years to code, if not 4. Now, I am not a dev, so I am not sure what exactly goes on in development, but I think all the major changes *Setting, major gameplay elements, etc* happen pre-coding with the concept, and the small stuff are plugged in here and there later on.