After months of speculation, the Tokyo Government finally announced that the opening date of the new Toyosu Market has been set for Oct 11th, 2018. Meanwhile the current Tsukiji Market will see its last day of business on Oct 6th. Wholesalers will have four full days to complete the move and have everything ready when the new market opens.
After the move is completed, the buildings at the current Tsukiji market will all be demolished and the space used as a transportation hub during the Olympics. It is unclear at the moment what the long-term usage of the site will be once the games are over.