I have just participated in a Webex on the new Cochrane Library interface. It was quite informative about the new features, but some useful features have been lost. It no longer keeps an automatic search history, and there still only a txt file download. I still prefer using NHS Evidence to search Cochrane, and use Medline and Embase to search for randomised controlled trials.
Nonetheless it is still an excellent resource and it is great that everyone in the United Kingdom has full access.