I am usually fine with getting them the day before, but if this is going to be an immense book of text for the next update log, I would prefer it a day early. It's not the balance changes necessarily, but the actual game mechanic changes, new hotkeys, changes in interface, layout changes, etc. that myself and others would like plenty of time to familiarize themselves with.
I'm not poking for a week early post of patch notes, but the day prior with an abundance of changes is a lot to internalize the day before release.