No recipe as such, but there are a few ways of making a mixed fruit turbo cider. I would start a normal plain TC batch, ferment it out and then rack it onto 1-2lb of mixed fruits (the bags of frozen fruit would be perfect if you don't want the expense of fresh fruit not in season yet). Let that sit a couple of weeks to extract the flavour, and continue to ferment out until the airlock bubbles slow right down. Rack, clear etc.
You could replace one litre of apple juice with a litre carton of mixed fruit juice, but that doesn't give much flavour on it's own. If you can get the Lowicz fruit syrups, you could mix some of them to get 220ml of mixed syrup (to the gallon) and add that. I did a raspberry, blackcurrant and cherry TC which came out quite well :)