NKOTB and BSB (Back Street Boys) have announced a joint tour starting in the summer of 2011.
They have set up a website and Twitter page for the tour.
You first opportunity to see the two groups perform live together will be November 21st on the American Music Awards on ABC.
Also, both groups will be on the Ryan Seacrest Show on Monday morning (November 8) at 6AM (PST)
Here are some articles from the media about the tour: