I came across this TR from Allears.net . Halfway through the first installment, they mention how their tour guide said that the cast of HKDL was told that the new attraction would be like Soarin but with a new video.
This contradicts the concept art of the attraction which clearly shows Star Tours like vehicles.
If this does turn out to be true, I would be disappointed because Soarin's ride system doesn't lend itself well to the fast paced action of the ride which the Star Tours technology could do very well.
Hong Kong Disneyland - Part 1 (Salute to All Things Disney but Mostly Disneyland)