Installed 7.0.1 and, OMG to my surprise, the site crashed - even index.php didn't run in my browser. Luckily, I backed up previously and have now gone back to 7.0.0.
On closer inspection, the logs told me that there are countless conflicts with add-ons purchased from merchants of this site (which work fine in 7.0.0). My advice is to think twice about upgrading and BACKUP if you do!!