i've seen June 1st as the release date but on the trailer and gamestop its saying september 1st and i saw one october 1st. i'm just wondering if anyone knows when the real release date will be?

There is no release date fixed, just fall (Autumn) this year.

I already calculated the date on given facts, it is

November - 4 = October, 28th

All other dates you found on the net are not founded on such a validated mathematical calculation like this and should not be taken serious.

No doubt, here is the whole plot
http://www.gamesas.com/index.php?/topic/1084154-officially-waiting-for-falloutnew-vegas/page__view__findpost__p__15798255

But jep officially they just said fall 2010 ... ^^

according to this site:

http://gamesweasel.com/blog/news/fallout-new-vegas-release-date/

the release date is 16th of november

The release date is when Bethesda announce it - and they haven't yet.