At least it'll let you move quotes now, which should provide a workaround to my issue of deleting the blank line after a quote and then being unable to type outside the quote.
Although perhaps not, on consideration, as it's not possible to insert anything before a quote at present (unless you type it first then quote the post I guess - but that involves far too much scrolling for my likes).
Edit: And the return of the 'quote this' option (this time without needing a plugin) is something a number of people should be looking forward to (myself included if editing quotes remains so slow and unresponsive on my machine).