Will Canon allow EF lenses to work on future RF bodies?

Steve Balcombe wrote:

Sittatunga wrote:

And Canon don't need to degrade the performance of the RF mount to make that happen.

I agree, but this is not so much about what will happen, as about what people fear could happen due to a lack of trust in Canon.

Other than the FD to EOS transition, where Canon introduced the T80, a few AF lenses, and the T90 other than to orphan them within months, and perhaps the rather short lifetime of the M system (which they never treated particularly seriously anyway, but you can still use your EF and EF-S lenses on existing M bodies), what has Canon done to engender that kind of mistrust?  They have never claimed to support third party lenses.

As was pointed out before, Nikon may be more open to third party lenses, but they've balkanized their own system over the years with all sorts of lens/body combinations that work, except that they don't in some way or another.  But as far as I know, all Canon EF-mount lenses are fully functional on all EOS camera bodies (except for one early lens that's AF-only and an early body that was MF-only).  You will need an adapter for an M or an R body, but Canon happily sells those -- three different ones, in the case of R.

We've just seen the announcement of three nice-looking APS-C primes for Z mount from Sigma - lenses which R7/R10/R50 owners are unable to access. All we have from Canon is a tough attitude from their legal people.

I certainly hope Canon changes its stance on this, but I don't see any mistrust issue here, since Canon never promised such.