I work for a national retail chain, and we have 2000+ installations of SQL Server Express edition deployed at store locations, and just last year we finally got all the locations standardized on SQL Server 2012. However, I wish now we had waited a few months, because even the lowly Express Edition 2016 has all these cool new features too. In addition to data compression (which is great when you're limited to a 10 GB database size), being able to leverage the new native security features (ie: TDE, data masking, column encryption) rather than relying on 3rd party addons will be a game changer functionally and economically.
"Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho