Since Autodesk acquired Eagle CAD, big changes have been made to Eagle CAD. Regardless of the new licensing system using subscription model, which was a subject to criticism by a lot of users, the new management of Eagle from Autodesk has successfully added a lot of demanding features that old team failed to bring out.
Eagle 8 came with a lot of new features like BGA auto-router and “Past Block Design” tool to add a complete block of connected components both in schematic and board.
The new release 8.1.1 brought PCB alignment tool to align a group of objects in different positions; top, bottom, left, right, center, and distribute horizontally / distribute vertically.
Another improvement in eagle 8.1.1 that deserves mention is that a new category has been added to DRC (Design Rule Check) called Airewire. It’s an important improvement because airwires is one of the most common things designer should be aware of. In older Eagle releases, you should work with your eyes wide open and never forget to hit ratsnest at the end of your work and read the magic sentence in the bottom corner “Ratsnest: Nothing to do !”.
Source: Autodesk Eagle’s Forum