TWRP 3.1 released with many new features

TWRP is by far has been one of the most popular custom recoveries due to its features, simple and touch UI. Team Win, the developers of TWRP recovery have released its new version 3.1 with many bugs fixed and new features added.

The 3.1 build is now available for supported devices. The features which is in limelight is the new ADB backup support, which will allow you to backup and restore any partition which TWRP can recognize. There are many other new features and many bugs fixed,so here's the changelog :

Vold decrypt on a few select HTC devices, TWRP will now attempt to use the system partition's vold and vdc binaries and libraries to decrypt the data partition (nkk71 and CaptainThrowback)
ADB backup to stream a backup directly to or from your PC, see documentation here(bigbiff)
Tweak MTP startup routines (mdmower)
Support new Android 7.x xattrs for backup and restore to fix loss of data after a restore (Dees_Troy)
Support POSIX file capabilities backup and restore to fix VoLTE on HTC devices and possibly other issues (Dees_Troy)
Better indicate to users that internal storage is not backed up (Dees_Troy)
Improve automatic determination of TW_THEME (mdmower)
Minimal getcap and setcap support (_that)
Try mounting both ext4 and f2fs during decrypt (jcadduono and Dees_Troy)
Shut off backlight with power key (mdmower)
Timeout during FDE decrypt (Dees_Troy and nkk71)
Support for FBE decrypt and backing up and restoring FBE policies (Dees_Troy)
Boot slot support (Dees_Troy)
TWRP app install prompt during reboot (Dees_Troy)
Support for AB OTA zips (Dees_Troy)
Support new Android 7.x log command (Dees_Troy)
Update recovery sources to AOSP 7.1 (Dees_Troy)
Numerous bugfixes and improvements by too many people to mention

To update your TWRP recovery to 3.1 build you can either flash the latest recovery image or download TWRP app from below :

Official TWRP app (Play Store)

Source: Android Police