I won't need this lens, as I'm already swimming(drowning?) in wide angle lenses, most of which have aperture rings.
However, this new 24-35/2 zoom gives me faint hope that maybe, someday, they'll produce one of my fantasy lenses, a 50-100, 60-120 or some such zoom of nice quality and at least f/2.8 aperture...T/2.8 would be better.