A review of the beta release of Ubuntu 11.04 shows the problems that happen with regular releases and radical change. Things break and the system is rough. That’s the advantage of Debian GNU/Linux testing flavour. They put all that rough stuff in a separate branch of the distro until it’s ready. Ubuntu charges ahead like a bull in a China shop.
If this is what Unity and Weyland have in store for the standard-bearing distro for the GNU/Linux desktop, the world needs to shift to something smoother like Debian GNU/Linux. A larger distro with more flavours gives smoother transitions and more choices. That’s what end-users or OEMs need to supply a usable product.