It seems the blog posts about Kubuntu Hardy and LTS were too long and too complex, so some people still wonder what the plan is. Here's a short and FAQ about it.
Q: Is Kubuntu 8.04 Hardy Heron going to ship KDE 4.0 ?
A: Yes, if nothing goes wrong, it is going to ship (as in ShipIt) a Live CD with a KDE4.0 desktop and some KDE3 applications that are not ready yet (Amarok, Kaffeine, digiKam, Kontact etc).
Q: Is there going to be a Kubuntu Hardy KDE3 Live CD, too?
A: Yes, you will be able to download it from kubuntu.org.
Q: What happens when I upgrade from Kubuntu Gutsy to Hardy?
A: You will get a KDE3 desktop. You can easily install the KDE4.0 one from the repositories if you would like to try it.
Q: Is Kubuntu Hardy going to be an LTS?
A: No.