PubMed 2.0 will be launched at the end of December. Currently, PubMed labs is the experimental portal where new tools and functions are being tested and evaluated. These features may be incorporated into the new PubMed 2.0. Users are encouraged to visit the website, try new features and provide feedback.
Visit PubMed Labs: https://www.ncbi.nlm.nih.gov/labs/pubmed/