See this post at the top of this forum for info on the changes and suggestions.
http://social.microsoft.com/Forums/en-US/onecaregeneral/thread/93ef4afe-d676-4e5f-bbc8-c9ef06295898The new Microsoft Security Essentails looks a bit different and doesn't have any of the 'extras' like backup, but it's prettey much the same 'under the hood' when it comes to the basic security aspect. Some of us have been testing it for months now and it just recently released, though you can stay with OneCare until your current subscription period runs out.
Rob