The protagonist's method of transportation will consist of a simple, non-motorized glider that you can mount and dismount. From the alleged excerpt: "From what we've seen there's never before been that feeling of flying around in the sky, combined with this scale of environment."
Clever rumor or legitimate clipping? We won't know until the next GI hits newsstands.
Update: The original source of the rumor doesn't lend it much credibility. We'll just go back to begging Ueda to hurry up then.