I was at this keynote and noticed that Shuttleworth pointed out that "all major upcoming distros are using the 2.6.32 kernel". Shuttleworth really wants that to be the case but the reality of the situation is that not all distro kernels are created equal even if they started with the same baseline kernel.
But saying as much would defeat Canonical's ability to woo would-be customers with something like: See through normalization and cadence we're just as good as the enterprise distros.
Shuttleworth's "cadence" appears to be purely about getting the community to work for Canonical without having to pay the upstream experts. A utopian ideal that helps Canonical compete with distribution vendors who do employ many of upstream's developers. Who can argue against utopia without looking mad!?