OK, so I've got the new CTP build of Windows Home Server and things are looking good so far.
You instantly notice that setup is a bit different this time around. When installing on the same PC you are given the choice of install type which is either a new install or a server re-installation. This completely wipes all settings etc. but preserves backups and all shared folder contents, cool!
As promised, you are also prompted for a server name rather than just being stuck with the default "SERVER"
Setup appears to take a while longer than the Beta 2 build but I did notice that it installs a Windows Update Redirector during setup and proceeds to download and install updates automatically - a nice touch.
Another promised item in this build is a short config wizard on first run and it's all starting to look very Vista-fied:
I've not had too much time to poke about but I have set up a custom domain .livenode.com and seen that the Server Console now includes an automatic connection checker to ensure that your server can be seen from the web.
If your router supports UPnP there is also an option to have the server auto-configure your router for you (unfortunately mine doesn't but I'm having to fudge mine due to ports 80 and 443 already being in use elsewhere).
Anyway, it's late so I'll be digging deeper tomorrow and posting plenty more shots of the differences between this build and Beta 2.