Case-Mate says that it has "inside-resources" that have given them information on the form factor of the next-gen iPhone and the launch date. So when the word "rumor" is used by Case-Mate, it has more weight than other reports. According to these "inside-resources" the Apple iPhone 5 will have a new form factor, will be wider and thinner than the iPhone 4 with a screen as big as 4 inches and an extended length home button. The next-gen iPhone will feature an 8MP camera, wireless charging and iOS 5 which offers wireless storage capabilities via iCloud. It will be available in black and white in 16GB and 32GB variants.
According to these "inside-resources", Apple will also launch the iPhone 4S which will have the same exact form factor as the current iPhone 4 but will offer an A5 dual-core processor and an 8MP camera, like the iPhone 5. Both the Apple iPhone 5 and iPhone 4S will launch in early October.
Yes, case designers need to get early specs on new phone models so that they can have inventory ready when a phone launches, but there really is nothing that Case-Mate's "inside-resources" has told them that hasn't already been leaked before. A lot of the speculation makes sense, but we won't know for sure until we see what Apple has up its sleeve, possibly as soon as the end of this month.
source: CaseMate via AppleInsider