After a couple of days of slow servers, today it picked up a bit and I installed Hardy Heron without problems. Well, with a couple of minor problems. First, my /boot partition is still just a little too small, so I had to move a few things around to manage the recreation of the initrd file. Second, there were some issues with dependencies in a couple of the GHC library files. But that was also fairly easily sorted.
I haven’t played a lot yet with everything that’s new; just noticed a few minor changes for now. Everything still seems to work!