If you didn't already pre-order your Galaxy S5 case from Griffin Technology they're now available for purchase on GriffinTechnology.com. Unfortunately there are not any new offerings, but these cases will fit the larger S5, and feature the proper port openings for Samsung's newer handset. Here's a quick breakdown of your options:
Survivor Clear for Samsung Galaxy S5 ($29.99) The Survivor Clear is crafted from clear polycarbonate and TPE rubber to protect your device from drops and bumps. Griffin promises it is drop proof from up to 6 ft and can withstand "18 hours of bone-shaking vibration, from 20 to 2000 cycles per second".