Personally, my ef 35mm f/1.4L II is so good, and still very well balanced on the R, I will keep it. Also my ef 100mm f/2.8L IS Macro. Better than ever with the R's AF capabilities. Both of these are definite keepers for me.
I have no immediate plans to "upgrade" my ef 24-70mm f/2.8L II, but IS on the Rf version is tempting.
Undecided about my ef 135mm f/2 L. It already feels a little unsteady on a 5DIV, and with the adapter for the R, more so. If IS is introduced on a new Rf version, hmmm....
Others?
I have no immediate plans to "upgrade" my ef 24-70mm f/2.8L II, but IS on the Rf version is tempting.
Undecided about my ef 135mm f/2 L. It already feels a little unsteady on a 5DIV, and with the adapter for the R, more so. If IS is introduced on a new Rf version, hmmm....
Others?