Update: Most up-to-date dates are found here.
Here are some details on additional the New Kids on the Block and Backstreet Boys tour dates and locations.
These were on nkotb.com for a few minutes and thanks to some fans on twitter, they saved the webpage before they were removed. So these are unofficial, but very probable:)
Kansas City, MO
St. Louis, MO
KFC Yum! Center
Quicken Loans Arena
Atlantic City, NJ