Today Apple announced the new iPhone 6S and 6S Plus. Visually these new iPhones look identical to the original iPhone 6 and 6 Plus but there's a whole heap of new hardware under the hood. If you think trying to squeeze all this new hi-tech goodness into the same form factor would be very hard, you'd be right. It's not easy to tell just by looking at them (well except for the rose gold version) but the new iPhones are ever so slightly larger than the original iPhone6's. We're only talking a faction of a millimeter, 0.2 at the most in any one direction, but it's enough to concern a lot of iPhone case manufacturers.
The good news is the current Quad Lock iPhone 6 and 6 Plus cases will fit the iPhone 6S and 6S Plus perfectly. Yes that's correct, we left just enough clearance on the original iPhone 6 and 6 Plus cases so that the slight size increase on the 6S and 6S Plus doesn't cause any issues and they will fit like a glove.
Official dimensions from Apple