With TWRP 3.3.0-0, users don’t need to first boot into TWRP temporarily to flash the recovery permanently on AB system devices. When installing TWRP, users will get a new option to ‘install recovery ramdisk’ which means users can install the recovery directly without the need of the separate zip installer.
Reboot into EDL boot mode button is another important feature of TWRP 3.3.0-0. This Emergency Download mode or EDL mode can help users to recover a bricked phone. Apart from above mentioned features, twrp 3.3.0-0 includes the following changes.
TWRP 3.3.0-0 changelog:
Official TWRP support is always very important for tech-savvy users of Android smartphones. The good news is that the Team Win Recovery Project has already been released official TWRP for many devices. It is one of the most popular options for flashing custom ROMs and Zip files. Latest version of TWRP is available for download from official TeamWin website. Choose your phone model and download recovery image file. (source)