Update (10/22/13): Apple did not announce an official release date for the second-generation iPad mini (iPad mini Retina display). The new device is currently listed as coming in "late November" on Apple's website.
UPDATE: Apple has officially sent out invites for a press event being held on Tuesday, October 22 at the Yerba Buena Center in San Francisco.
Apple is expected to announced the fifth-generation iPad and iPad mini 2 on October 22, 2013, followed by a November 1, 2013 launch. However, nothing has been officially confirmed as of right now.