For all Radarcape/Airsquitter users there is an update available from Jetvision since yesterday.
It upgrades the devices to version 210406.1000.02 and showing some nice features for monitoring the device
Update needs to be performed via web-interface where it should show the new available release. If it does not show it (like for me), reboot the device and try it again.
Major “visible” update is a status page about the system health: