It's odd - something downloaded, I assumed it was a hotfix of some sort - and then I couldn't load the campaign I was playing, which I had started with patch 6 and continued with patch 7 (it definitely was 7 - it had the new imperium levels). I started a new campaign, and it was apparent I had reverted to pre patch-7 (the imperium levels were back to the old version). I had to go into steam and re-enroll for the beta, which had to download again, and then I started a new campaign with patch 7 again. Bizarre.