You have my sympathies, that really is shocking from Shimano.

You have to laugh that their "flagship" clinchers are now 13 years old and will be 15+ years by the time that they see another update; sure, technology hasn't moved on that much since 2004 has it?!

I can only imagine that it's one huge cock-up and miscommunication between marketing and engineering, because they can't realistically expect to trumpet a new wider, deeper-rim wheelset and expect no-one to notice that they're exactly the same as the old ones! As for renaming them C40s and C60s when they're exactly the same as the C35s and C50s, goodness knows what they're thinking...

Thanks for posting as I was very interested in these.