Papers aren't "scheduled to be published". Once submitted, papers go through a review process that can happen quickly or can take awhile. If you look at the paper from February in Cell Reports, the original draft was received by the journal on December 30, 2015. It was sent back for revision (we don't know when), and the revised paper was received on January 5, 2017. The paper was accepted in its revised form by the journal on January 25, 2017, and it was published on February 21, 2017. So it was about 14 months from the time they submitted the paper until we knew about it. They of course didn't wait until that one was published before they started working on additional papers, but we have no way of knowing where things are in that process.