As far as I can see there is nothing new here. All three of the products i.e. camera, siren and sensors have been on sale for some time.
Netatmo have always and still do offer various ways to record camera footage (automatically) to a free destination. Either this has been the included SD card, or an FTP server or a free Dropbox account. (Dropbox have changed their terms to make this far less attractive.) Not yet available but already announced has been support for Apple’s new HomeKit Secure Video feature which records to your iCloud account. (Paid storage required.)
Really, really annoyingly Apple have configured their HomeKit Secure Video so that you can get either 2-camera support or 5-camera support but not higher! Even a single house might end up with well over 5 cameras, remember this could include indoor, outdoor and smart door bell cameras all of which Netatmo have, on top of that HomeKit is supposed to support multiple houses under a single account making the potential total number of cameras even higher!
It does sound like Netamo have a new app to improve the integration between these devices though.
I would consider this to be similar to other ‘smart’ alarm systems but with vastly better cameras and no professional monitoring, i.e. it is a self monitoring system via the app.
Note: Netatmo’s Welcome camera as per this bundle includes facial recognition.