UPDATE: Microsoft's Major Nelson has confirmed the leak, announcing that all 8 games listed below will be available on Xbox One backward compatibility today.
ORIGINAL STORY: 8 new games are heading to Xbox One backward compatibility later today, according to Xbox insider Ekim, including Sonic The Hedgehog 4.
Other games rumoured to arrive include 2011 platformer Bionic Commando Rearmed 2 and music platformer Fret Nice. You can check out the full list below.
Ekim has previously broken multiple Xbox-related stories ahead of their announcement, including July's Games with Gold line-up and the special edition Gears of War 4 Xbox One S, suggesting today's leak could be legit. Expect an official announcement from Microsoft later today.