dude you retard the vault wikia has bethsda studios creators on it retard
1 - That seems a bit unnecessarily confrontational, was it really necessary?
2 - Where do you find that info?
3 - Even if they are it is a wiki, which means it is community edited and the information on it may or may not be 100% accurate.
4 - Whatever date they put on the wiki is not an official announcement, it is an estimated release date.
5 - The got the date of OWB wrong, with them originally listing the release date as June 2011, hence my earlier statement.
So until the release date is listed on the official Fallout homepage it is an estimated release date, not an official one, and might or might not bear any resemblance to the actual release date.