This was the picture posted on the official UK Mountain Dew Facebook page. The caption read as follows.
We must still have some Game Fuel fans out there back from the Halo 3 days. Ever since Game Fuel was retired I have yet to find a Mtn Dew flavor that tasted as good. The picture above is sporting two different colored drinks, one orange, and one yellow/green.
Hopefully when the flavors a released they will live up to everyones expectations.