Further to the previous story, four more dates have just been added, making twelve additional dates in all if you take into account the show added late Friday/early Saturday for December 8th at San Jose. Here's the additional shows:

• September 23rd: United Center, Chicago
• November 11th: Wachovia Center, Philadelphia
• November 30th: Staples Center, Los Angeles
• December 14th: Honda Center, Anaheim

Tickets for all these shows will be available through Ticketmaster.com (don't forget to click into their site from here!) from tomorrow morning, May 11th, at 10am local time for that city (Chicago is on CDT, Philly EDT, and LA/Anaheim on PDT). This is when the first of the presales starts for these four concerts.

The updated tour schedule is therefore as follows:

2010 Wall Tour of North America
Sept. 15 – Toronto, ON @ Air Canada Centre

Sept. 16 – Toronto, ON @ Air Canada Centre

Sept. 18 – Toronto, ON @ Air Canada Centre

Sept. 20 – Chicago, IL @ United Center

Sept. 21 – Chicago, IL @ United Center

Sept. 23 – Chicago, IL @ United Center

Sept. 26 – Pittsburgh, PA @ Consol Energy Center

Sept. 28 – Cleveland, OH @ Quicken Loans Arena
Sept. 30 – Boston, MA @ TD Garden

Oct. 1 – Boston, MA @ TD Garden

Oct. 5 – New York, NY @ Madison Square Garden
Oct. 6 – New York, NY @ Madison Square Garden
Oct. 8 – Buffalo, NY @ HSBC Arena
Oct. 10 – Washington, DC @ Verizon Center

Oct. 12 – Uniondale, NY @ Nassau Coliseum

Oct. 13 – Uniondale, NY @ Nassau Coliseum

Oct. 15 – Hartford, CT @ XL Center

Oct. 17 – Ottawa, ON @ ScotiaBank Place
Oct. 19 – Montreal, QC @ Bell Centre

Oct. 20 – Montreal, QC @ Bell Centre

Oct. 22 – Columbus, OH @ Schottenstein Center

Oct. 24 – Detroit, MI @ Palace of Auburn Hills

Oct. 26 – Omaha, NE @ Qwest Center

Oct. 27 – St Paul, MN @ Xcel Energy Center
Oct. 29 – St. Louis, MO @ Scottrade Center
Oct. 30 – Kansas City, MO @ Sprint Center
Nov. 3 – New York, NY @ Izod Center

Nov. 4 – New York, NY @ Izod Center

Nov. 8 – Philadelphia, PA @ Wachovia Center

Nov. 9 – Philadelphia, PA @ Wachovia Center

Nov. 11 – Philadelphia, PA @ Wachovia Center

Nov. 13 – Fort Lauderdale, FL @ Bank Atlantic Center

Nov. 14 – Fort Lauderdale, FL @ Bank Atlantic Center

Nov. 16 – Tampa, FL @ St. Pete Times Forum

Nov. 18 – Atlanta, GA @ Philips Arena

Nov. 20 – Houston, TX @ Toyota Center

Nov. 21 – Dallas, TX @ American Airlines Center
Nov. 23 – Denver, CO @ Pepsi Center

Nov. 26 – Las Vegas, NV @ MGM Grand Garden Arena

Nov. 27 – Phoenix, AZ @ US Airways Center

Nov. 29 – Los Angeles, CA @ Staples Center

Nov. 30 – Los Angeles, CA @ Staples Center

Dec. 6 – San Jose, CA @ HP Pavilion

Dec. 8 – San Jose, CA @ HP Pavilion

Dec. 10 – Vancouver, BC @ General Motors Place

Dec. 11 – Tacoma, WA @ Tacoma Dome

Dec. 13 – Anaheim, CA @ Honda Center
Dec. 14 – Anaheim, CA @ Honda Center

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