King Con 2016 takes place over March 11th-13th.
King Con is a gaming convention which has tournaments, a tradeshow, workshops and much more.
More details as they come in. You can see the library page and the Kingston Nexus page for a lot of the details.
Based on 2015 it will take place at various different venues. Last year some events were at the KFPL, others at the Kingston Gaming Nexus and Screening Room.