The new redesign can be previewed at
The redesigned PubMed is running concurrently with the ‘old’ PubMed.
Siobhan Blackwell with the NN/LM contributed these two web links.
PubMed Redesign Webcasts
Two librarians “weigh in” with first impressions — David Rothman http://davidrothman.net/ and Patricia Anderson http://etechlib.wordpress.com/2009/09/29/what-i-most-want-to-be-able-to-find-in-the-new-pubmed/