Holding out hope that Legends might make a return, but I'd say it's unlikely as usually announced by now and there's still the question of location.
Unfortunately, Sywell announced yesterday that this year's show will remain a one off and will stand as a legacy of the late Richard Grace, which is totally understandable as he was the driving force. But, it's also a damn shame, it was a fantastic show and a worthy successor to Legends.
So, realistically that leaves us with the two main players, RIAT and one of the Duxford shows.