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I had held back on reporting this because the only corroboration was a MySpace page and, let's be honest, that's about as useful as seeing it written on the side of a cardboard box outside of Wal-Mart.

But, yes, Making the Band 4 will be back - with Diddy. MTV has a site up. And here is a promo trailer with Diddy:

From the Bad Boy MySpace blog, here are the casting dates:

January 17th - Los Angeles
The Knitting Factory, 7021 Hollywood Blvd.

January 20th - Houston
Meridian, 1503 Chartres

January 23rd - Orlando
Cub Paris, 122 West Church St.

January 27th - Atlanta
Verve, 511 Peachtree St. NE

January 30th - Chicago
Club 720, 720 N Wells St.

February 3rd - Detroit
Plan B, 205 W.Congress St.

February 6th - New York City
The Roxy, 515 W. 18 St.