I've been meaning to check out the new Blogger beta, and was finally prompted to switch by the posting troubles Blogger has been having with the older version.
So far so good. I have not played with the new template features, and though I've played with the labelling tool I have not yet see how (or if) it looks after publishing.
Update 1: Ah, now I see... The labels appear at the bottom of the post after publishing. Publishing itself seems somewhat faster, as they said it would be. So far I've had a very similar experience to that with the old Blogger, though I read a post somewhere that made mention of a consequence to commenters who are still on the old version. I'm guessing that has to do with the change in how you sign in to Blogger, which is now done via a Google account.
Update 2: Now I see, too, that whereas the RSS feeds ("live bookmarks" in Firefox) of the blogs of other Blogger bloggers whose opinions I value are failing to load (as mine almost certainly would have before converting to the new Blogger), mine loaded as they are supposed to. To any Blogger blogger who happens to see these words, I suggest going to the new Blogger at the earliest opportunity. It's a little different but not that much, and their new equipment and software seem to be coping much better than the old.