I agree that this is not a replacement for the RF 100-500. Nor do I think this will be another 100-500, that seems like a move that would be too stupid to make. Since the RF 200-800 is NOT an L lens, I can see Canon adding an L lens that has a longer focal length than the competition's typical 600mm's. So my guess is the 200-700mm is the most likely new lens - although I can easily see none of the lenses on the patent being made, as the current RF 100-500 and RF 200-800 cover most everyone's long telephoto needs.I get the impression fro the patents that this is a new lens and not a replacement for the current RF 100-500. The current lens is a perfect set of specifications for a walkabouts / travel lens that is super sharp, great AF and IS, light and convienient. This patent / rumoured new non extending lens is a bit brighter.
From the list of rumoured patents, the 180-600mm f6.3 looks the most interestng to me and wouldn't clash with the current rf 100-500 or RF 200-800 options. It would basically be a L series bigma....with Canon tech and optics.
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