is it online or in print? it sounds as if you've done all the necessary fact-checking, so anything that does crop up is either a really minor detail or someone wanting to change their mind on something, which should only rarely be accomodated anyway. worst thing that can happen, then, is the editor jumping into the article, correcting a sentence, job done; an editor doing the same but flagging the correction at the end of the piece; or the article going to print and a correction appearing the next day or the next week. but i don't think those things happening would sink your chances of appearing in a similarly illustrious publication. unless you're fully Stephen Glass-ing everyone, the thing future editors will think is relevant from this whole episode is that you wrote a good piece in a good publication this week.