Sonic Runners Teaser and Details

As well as the above teaser trailer, thanks to an interview by Famitsu and a translation by Sonic Stadium, we do have some details!

Stages are designed to be one or two minutes long.
The game is a 2D action side-scroller.
Controls are designed to be operable with one hand.
It seems you will move forward automatically, and will tap the screen to jump.
Dr. Eggman will appear in the game as a boss.
There is talks of colour powers, and having a companion in the game. Wisps to return?
There will be new music for the game.
Familiar elements like rings and loop-de-loops return.

There are also rumours of Sonic Runners being released this month in Japan, no doubt to follow for the rest of the world. Whenever it comes out, it will be free on iOS and Android, with in-app purchases.