If you're a Lightroom user and you're ever upgrading your image processing workstation, I urge you to think about where you've stored your catalog file and to back it up before you format your drives.
I am apparently not that bright, therefore forgot to do this. I have to go back and re-import everything again. Thankfully I'm not silly enough to have deleted the source catalogs from our trip, so all the metadata is still there, just somewhere else.
Other than that my upgrade went very smoothly.
