Two bids for the 2021 Worldcon made announcements on June 12, 2017, with one bid folding its tent and another one launching.
A proposed Boston in 2021 bid announced that they were “not able to find affordable, workable space for 2021” and have decided not to bid after all.
Meanwhile, The Baltimore-Washington Area Worldcon Association (BWAWA) announced that they will bid for Washington DC in 2021. This bid was originally announced for 2024 but has been changed its bid to 2021.
For more information about Worldcon bids, see the Worldcon bidding page.