The info I've heard is that the fox wing has been discontinued. The fox wing was a collaboration between Oztent and Rhino Rack, these two companies have now decided to make their own awnings.
Oztent will be bringing out a redesigned fox wing, possibly without support poles, and hopefully a less fragile hinge.
Rhino Rack are going to be bringing out a new awing called the Bat wing, which rumor has it, may also be self supporting.
I haven't heard any release dates for the new awnings but hopefully they will be on the market this year.
As has been said there is the Ostrich wing, which is made by African Outback. This is a self supporting awing with aluminum arms that have tie down rings at the end of the arms for when it gets windy. I have seen this awning in the flesh in Germany and SA, it looks well built and robust. It is designed to be fitted to the African Outback roof rack and as such, it has a support arm that goes from the top of the hinge down to the rear of the rack to triangulate the hinge mounting point. This bolts directly to the African Outback rack as it has lots of channels to take mounting fixings, if you were to mount it to a different rack some drilling / modding may be required to provide the strong mounting at that point.
As John said weight may be an issue, and was also a concern of mine, but a quick bit of research says that the Fox wing is 21kg and the Ostrich wing is 23kg. I did see the Ostrich wing deployed, packed away and set up on a windy day with out guy ropes and it gets the thumbs up for me. So far the only reason I haven't bought one is that I'd like to see what Oztent and Rhino Rack come up with, and the price, well its a SA product so it costs a lot by the time it reaches our shores.
The Ostrich wing is available now, and the only supplier I've found in the UK is TBR.
Cheers.