Okay, so now Screamscape has picked up a rumor that this could be a giga:
I think this is very possible for the following reasons:
1. They already proved that they can break 300 ft with Falcon's Fury, so I think a giga is very likely!
2. Carowinds is building a giga for 2015, so it'd be a nice "duel in the South" for 300 footers.
3. BGT needs a ride that will attract the growing tourism in Orlando. A simple hyper won't do the trick, or a woodie. An innovative dark ride would but in terms of coasters, I think a giga would attract more than any other coaster.
Still take it with grain of salt, but I'd say there's a big chance