I have been having requests to enable Kernel Mode Setting (KMS) in the latest mainline kernel builds so they can be used for testing on Karmic. The problem is that the primary consumer for these mainline builds is for testing on older series, mainly Jaunty, and that does not want KMS to be enabled. While the official kernel for Karmic should be very close to the mainline builds, kept up to date approximately weekly, it certainly is not a crack-of-the-day kernel for the development release.
It seems likely we need to be building these kernels both against the current stable kernel, and against the kernel configurations for the current development release. Likely that means we should be naming all the builds by the release for which they are targeted. More upheaval.