I agree with the members who think there are practically no chances of HU joining oneworld at the moment. It wouldn't bring a real value to the alliance, Cathay and Dragonair cover quite well the markets oneworld targets.
I'd also like to remind that in the past two years oneworld underwent a major expansion plan with the adding of new airlines, recently at SriLankan's joining ceremony they stated they aren't looking for new members and things will stay quiet for a bit.