AllThingsD has recently confirmed that Apple will be releasing a Miniature iPad this October and an iPhone 6th generation this September. Apple seems to be the only source that you can really trust to confirm the release of their next generation devices. In fact, Apple may have told AllThingsD this information. But, ATD has a great record for confirming next gen Apple device announcement and release dates before Apple actually sends the event invites, which we will most likely see sent out within the next few weeks for the September iPhone event.
Although we do not have a specific launch or announcement date for the iPad mini. Now we atleast have a trusted source confirming it to be this October sometime. As for the iPhone 5, iMore has predicted September 12th will be the date for the device.