I think that poloniex will add the iconomi token by the end of this week.
end of the week 2019
Who knows, maybe never, maybe this year. We don't know when only busoni knows the date. If he is interested in iconomi, he should have listed icn on launch day. Definitely he doesn't like, maybe he will wait for the full release date.
Maybe he hates it, because the index fund investments are bypassing exchanges. Or will Iconomi buy coins from Poloniex for each investment?