A single four-core CCX, or only one active CCX on a dual-CCX chip, would help avoid many of the problems that appear to restrict Ryzen 7's gaming performance in many popular titles, and frankly, many enthusiasts are hoping this is the case.
Unfortunately that's NOT the case. Ian Cutress from Anandtech was able to confirm that
all 6 core variants are using a 3+3 design, with all Ryzen 5 quad core variants employing a 2+2 configuration. That is a shame, particularly as a quad core with a single fully functional CCX for ~$170 would seem to have a similar markup (percentage wise) to the Ryzen 7 1700 with two fully functional CCX (~$340). Perhaps yields are pretty poor meaning they need to make use of a large number of four core CCXs that only came out with two working cores.
Still, at least AMD isn't playing games by selling some CPUs with 4 + 2, or 4 + 0 and others with different configs.