According to the literature, "Cienna is an exciting new grape variety bred by the CSIRO Plant Industry by crossing Sumoll, a grape variety from Spain with Cabernet Sauvignon."
I opened this six months ago - the down under summer equivalent of what you are experiencing in the Northern hemisphere now.
Brown Brothers Cienna 2008 A radiant purple violet in the glass, sweet and syruppy but refreshing and fruity served straight from the fridge on a very hot summery afternoon. With its frizzante demeanour, it is like sparkling grape juice though much better with its thick vinous texture. Greatly appreciated by everyone on the day and perfect for a summer tipple if you are the driver. Just 5% alcohol by volume, it matches savoury and spicy hot as well as sweet. Yummy with strawberries, delicious with chocolate and surprising good with spicy Vindaloo. Just watch the bottle if the kids are around.