From the same people that brought you The Lost Room
The Lost Room was an EXCELLENT miniseries and also dealt with alternative universe kinds of topics. The writers and the director (who was also a writer) were both behind the Lost Room. It'd be a real shame if this didn't get picked up for a season, the people behind it really seem to have a knack for a kind of Twilight Zoney kind of science fiction.
Let's hope this is even available not because Fox is just trying to recover sunk costs from producing a pilot they couldn't sell but because it's seen as having promise and they want to do a kind of backhanded, social-media type of buzz campaign to attract someone to buying a series.
It's also surprising that there aren't more shows based around a parallel universe concept. It provides a lot of options for storytelling.