No, you can still have u-boot (and by extension MeeGo) with Power47, you just have to be willing to read directions a little and do some work, instead of just clicking on a link in the app managers. As for the above kexec question... Pali tried to see if he could get kexec to launch other kernels from within the console you can get now at boot with power47, but I don't believe it ever ended up working for him.