Just saw this at PhotoPlus, in NYC - impressive thickness, that extra 40g is very noticeable, and yes it does seem more durable than Regular Baryta/Platine.
I tried to scuff it with a fingernail brush across, but couldn't (apologies Canson!). Also glad to hear they have made it 'flatter' than the old Baryta, which had a fierce curl, causing many printer problems when using rolls. Rather more glossy and 'stippled' than I like, and an unknown for its longevity at this point, but looks promising.
Sadly Rolls top out at 50", which is annoying for anyone with a 60+" printer.
Look forward to a proper test!