it's definitely not coming out on 11/14... that's just a placeholder date. you'll notice that EB has a lot of games listed as coming out on 11/14 and 11/15 but few of them actually will. hell, they have some games listed twice, once with the actual date and once with this old placeholder date. gamestop lists it as coming 11/1. you can't believe some of these retailer dates.
personally, i don't think electroplankton will see an american release. nothing has been said of it since E3, and american audiences just won't understand the game at all. even reggie once said that if electroplankton sees a domestic release, it would have to undergo major changes, and perhaps become a totally new game with hip-hop music and something other than plankton.
when the DS was first announced, we were promised an american release of daigasso band brothers (aka jam with the band) and we've still not seen anything more about it. i think the same will happen with electroplankton. it was shown and hyped at E3 as a way to get people (retailers and press) excited about the DS. i don't think it was ever actually intended to be a released title, over-zealous fans just took it's E3 appearance too far.
on the off chance that it DOES find a way here, it won't be until early 2006, when game releases are usually slow. but with metroid prime hunters and a few other titles promised to be released then, and nintendo's desire to build a solid online community for the DS in 2006, i doubt they'll waste their time and efforts with a game like electroplankton.
so import away, i say... just don't blame me if i'm wrong.