While the initial New Kids On The Block / Backstreet Boys announcement only contained a few cities, today’s update gives you a chance to see just how big this tour is going to be. Newly added locations include Uncasville, Conn., at the Mohegan Sun Arena June 2 (now the first date on the routing); Washington at the Verizon Center June 3; Boston’s TD Garden June 4; Philadelphia at the Wells Fargo Center June 5 and Montreal’s Bell Centre June 7.

Other added stops include Pittsburgh (June 15), Auburn Hills, Mich. (June 16), Nashville (June 21), Atlanta (June 22), Lafayette, La. (June 24), Houston (June 25), Dallas (June 26), Phoenix, Ariz. (June 30), San Jose, Calif. (July 2), Las Vegas (July 3), Tacoma, Wash. (July 8) and Vancouver (July 9).

Also new on the schedule is a second night – June 18 – at Chicago’s United Center. Toronto scored a second night last week with the announcement of June 8 at the Air Canada Centre.

Sunday night was the first time the groups performed together on television when NKOTBSB played the American Music Awards.

The new dates go on sale beginning Dec. 11. For more information, click here for the New Kids On The Block website, here for the Backstreet Boys’ web home and here for the tour website.