Ahh… I see that the 19Q doc/specs are at “latest” (vs. “stable”):

http://docs.rigetti.com/en/latest/qpu.html

But… the HTML frame for the chip/connectivity image for 19Q has the wrong proportions, so the image is squished vertically, although the raw image is fine if you view it in a separate browser tab. I guess qubit images don’t “scale” proportionally on qubit count (a little joke!).