The new cases for Raspberry Pi B+ have already been announced. The new Model B+ sacrifices the physical compatibility with prev Model B due to additional ports and IO pins. This means that old cases that used to fit Model B no longer work with the new Model B+.
Here is a roundup of new cases announced so far :
- Pibow Rainbow for RPi B+ from Pimoroni
- Pibow Coupé for RPi B+ from Pimoroni
- Pibow Ninja for RPi B+ from Pimoroni
- ModMyPi & Cyntech Raspberry Pi Case from ModMyPi
- Adafruit Pi Box Plus from Adafruit