A list of the rumored tour dates:

5/14-Los Angeles,California-Staples Center
5-17-Minneapolis,Minnesota-Target Center
5/22-Atlanta,Georiga-Phillips Arena
5/23-Miami,Florida-American Airlines Arena
5/25-New Orleans,Louisianna-Super Dome
5/27-Nashville,Tennessee-Sommet Center(Formerly Nashville Arena)
5/28-Louisville,Kentucky-Cardinal Stadium
5/30-Baltimore,Maryland-Merriwether Post Pavillion
6/3-San Antonio,Texas-Verizon Wireless Ampitheatre
6/6-Las Vegas,Nevada-Mandalay Bay Arena
6/11-London,England-O2 Arena
6/12-London,England-O2 Arena
6/15-Dublin,Ireland-Point Arena