NB! For Rapsberry Pi only Raspbian Buster (Raspberry OS) and Raspbian Bullseye are supported. If you are still on Stretch, you will need to upgrade you Raspbian.
New features and improvements:
Z-Wave Plus v2 support
Better Homekit support
Fixes for Home Assistant integration
Added two-directions WebSocket API
Generate new API token for the selected user from the admin interface
Improvements in EasyScripting
Security app improvements and fixes
Allow Unsecure, S2 only or S0/S2 inclusion modes (best network performance is with S2 only, most secure is S0/S2)
Added overrideDefaultDuration to SwitchBinary, SwitchMultilevel, SwitchColor to override the device default value
Added duration in SwitchColor and SwitchBinary
New Command Classes support:
DoorLock v4. Big change in DoorLock C/JS API and DataHolders
Indicator v4
UserCode v2
Configuration v4 control
Configuration v2 Bulk mode support
ThemostatMode v3 Manufacturer Specific added and refactored
EntryControl v1
FirmwareUpdate v7
Whats next?
Add support for Z-Wave Long Rage (US users can also check the v4.0.0 release candidate)
Poltos, can you tell me more about this option in the changelog ?
Allow disable packet log for slow systems or big networks
Go in Apps > Active > Z-Wave Binding and select to disable or enable the logging. It is for Popp/Z-Wave.Me Hub and similar h/w, as well as for networks with 50+ devices on RPi3. RPi4 can handle 100 devices without any issue with the logging enabled.