In case anyone missed it, there was an update on the Mobile viewer Private Alpha yesterday. (See the link below.) At the same time, I believe that LL sent an invitation to "all Premium+ users" via email to join the Alpha testing.  I received one of those emails, and I am already part of the program! So, after reviewing some of the updates I logged in for the first time in awhile and saw that there were indeed some improvements and new features (as in the article).