The rumor originates from over at TwitchFilm, where an unnamed source has told Todd Brown that Universal Pictures is mulling over the possibility of shooting the two sequels concurrently in Europe. There's no more specificity to the potential locations, but shooting on the continent makes sense. After setting Fast Five in Rio de Janeiro (Puerto Rico was the primary filming location), Lin stated in May that the next round, "We'll be going elsewhere."
Almost two weeks before America properly showed its love for fast cars and sweaty musclemen at the box office, Universal signed a two-year deal with Chris Morgan, the screenwriter who has written each entry since The Fast and the Furious: Tokyo Drift. His deal naturally included living his life a quarter mile at a time at least once more, but it's not inconceivable that Universal would wrangle him for two more.
One element of Fast Five's success was almost certainly Dwayne Johnson as Luke Hobbs, a federal agent determined to capture Paul Walker and Vin Diesel, putting an end to their outlaw ways. Since the introduction of another ridiculously ripped, sweaty bald dude to engage in vigorous fisticuffs worked wonders last time, the casting of Jason Statham would make perfect sense in franchise-logic.
According to the source at Twitch, Statham and Universal are in the most preliminary talks "to explore the possibility of the action star joining one or both films." So this is pure rumor at the moment, and even if it's not, don't get your hopes up that The Transporter will join the thieving crew for the nextbit of lovingly choreographed car chase mayhem.
Both Diesel and Walker will return for the next film (and the one after, if this rumor turns out to be accurate), along with Dwayne Johnson, Jordana Brewster, and presumably the bulk of the ensemble culled together from the entirety of the franchise before Fast Five. Spoiler alert, folks, but an after-credits tag attached to that films also alluded to the possible returns of Eva Mendes and Michelle Rodriguez, who character was thought to be every shade of dead in Fast and Furious.
The next The Fast and the Furious is already scheduled to hit theaters on May 24, 2013.