Any project can suffer delays, and nobody can be 100% sure of finishing a project to a given date. On the other hand obviously Bethesda's developers know this, I suppose the project is supposed to be finished way earlier than the given date.
Anyway. If Skyrim is finally delayed, it would only mean that they had priorize to release a quality product over releasing on the given day.
Not concerned bout this.
and CoD4 made the Marine Corps Birthday.
If only Bethesda pushed the release back a day, they could too....USMC birthday release rather than the day after. would automatically make the game really badass.
I suppose in the case of CoD4 that birthday make sense, but in a fantasy RPG...