pich.byrd, I just came from the Launch event and they said you can upgrade directly from 7.5 but you'll need to be on the latest Hotfix. I've done the upgrade in my lab, but I was coming from 7.6 HF7. In that scenario, it was totally painless. Essentially it felt no different than doing a hotfix, except that I had to install one new pre-requisite (OpenXML if I recall?).