The new GoPro Hero 4 was released on the 5th October 2014.
[UPDATE: GoPro have released the Hero 7 Black Edition. You can find more about it here.]
The new Hero 4 is available in two varieties the Black Edition and Silver Edition. The Hero 3+ Silver and Hero 3 White editions still form part of the range. A new lower spec Hero is also available.
The form factor of the Hero 4 remains the same as the 3 and 3+ with some slight alterations. This includes a change to the front LCD information screen that now houses the status and connection LEDs. The battery has also changed in both spec and shape!