stees

* Transparent File Compression

* Previous File Versions with Snapper

* Larger IO sizes for SMB2/3 by default

* SMB2 leases

* Messaging improvements

* Samba Registry Editor

* VFS WORM module

* VFS FRUIT module - decent OSX support!

Release Announcement:

https://www.samba.org/samba/history/samba-4.2.0.html

More details about the features:

https://wiki.samba.org/index.php/Samba_4.2_Features_added/changed