NOOOOO Canon, don't put IBIS in the next EOS R at the moment your the only Camera Company that dosn't have it. IBIS is for marketing and amateurs who don't know how to hold a camera. Canon is also correct in stating the optical stabilization is better than sensor stabilization. If you do...
In my opinion Canon produces a great product and dosn't need to match NO ONE. The only thing Canon should be doing is bringing to market an updated camera that performs better or provides better options than it's succesor.
Under $4,000.00 hahaha, you do realize that it's Canon! Not saying it won't be good, but if Canon sticks to there normal marketing approach, it also won't be cheap. My guess would be in the $6,000.00 range.