I emailed Powerflex last week after someone pointed out they do a camber/caster adjustable bush kit for the 197/200. I just asked if a similar kit was coming to the Megane owing to the similar wishbone/suspension design. I had a response to say that they hope to be bringing a Megane kit in the 'next couple of months'. Whether that is a fob off or not, I guess only time will tell.
I did hear rumours that they were developing stuff a while a go. I've just replaced my wishbones though so its not something i'll be doing for a while atleast lol.