BGR has it on good authority that the next iPhone will not merely be a speed boost like the 3GS, but instead a full redesign as previously rumored by sites like thisismynext.com on multiple occasions. BGR’s source also told them the iPhone 5 would be released in the last week of August, which is strange because of the iPod event which should follow in mid-September. This report seems to contradict Apple’s iOS 5 launch date (currently pegged at an loosely pegged “fall” time frame). Either iOS 5 is moving along faster than they thought it would two weeks ago at the Keynote, or the next iPhone will launch with a version of iOS 4. Of course, Apple could always push iOS 5 for the iPhone 5 before any other device received it, which would eliminate this problem (and it would allow Apple to scale up the number of people that will be using iCloud and other iOS 5 services).
Whether the August event will just be for iPhones or possibly all iOS devices still remains to be seen, but please speculate all you wish in the comments.