Board Thread:News and Announcements/@comment-4556650-20140411113722/@comment-3544775-20140411150426

Unlikely, unless FT ends with 26 episodes and Nanatsu starts 6 months after that. Otherwise the team working on FT will be busy with FT, so another team will work on Nanatsu. But the quality will depend on the budged, which is not bound by the team, and kinda don't see it to be too big of a budged. Still for a 26 episodes anime it will have better budged per episode than the first FT with the 175 episodes.

I'm only guessing/thinking it's going to be A-1 Pictures, don't take it as it's them for sure. There is still no info about the studio or any hints about it. My reasons are that FT won't continue for that long, and Magi probably won't get new season next year, since the 2nd anime is close to the manga. So they may want to get new action/fantasy which can become a hit, like FT and Magi.