I think you are thinking of the dura-ace 9 speed shifters, which are still made and which will also work with
DURA ACE 8 speed ONLY.
The 8 speed ultegra shifter hasn't been made for some time
AFAIK and I do not see it offered on their site. I have a set, they are the best touring barcon period, IMHO as I consider 8s shimano the most practical, cost-effective and durable system around.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear