If you mean Eddie Lebron's Sonic Fan Film, it is still unknown when it will come out, but a third trailer was recently released.
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Sonic came from Sega when they needed a new popular game so they came up with Sonic as a character.
So far 1 real one (Sonic the Hedgehog: The Movie, sometimes referred to as the "Sonic OVA"). But there's this youtuber called "SonicMovies", who makes sonic movies from sonic games. Also, Blue Core Studios is making a non-profit Sonic Fan Film which may come out this year. But other then that, so far, 1.There's sonic riders, one about Princess Elise and Sonic: The Movie that's the only three I have seen.
sonic shadow
after sonic battle 1, but before sonic battle 3
Sonic RPG episode 10 will come in mid of 2014.