The only addition to the base application is that the installer now installs the Microsoft redistributable libraries if needed. (which makes the download a bit bigger unfortunately)
But the main attraction is some new registration algorithms in the Offline Scan Processor.
Besides the existing ICP, there is now a faster ICP Non Lineair version, as well as SAC-IA (Sample Consensus Initial Alignment if you must know).
Which generally speaking is faster and much more robust aligning point clouds with substantially different camera positions.
All thanks to the brilliant minds at PCL!