The 13.2.2 S2 Sonos App update was 3 weeks ago - it just mentions bug fixes and nothing more specific. 

Sonos mainly post updates when there are feature/other-important changes, from time to time …and you will find those updates available here:

S2 System Updates:

https://support.sonos.com/s/article/3521

S1 System Updates:

https://support.sonos.com/s/article/4941

Thank you, is roam considered an s1 or s2 system?

I'm sorry I've only had my Sonos roam for a little over a month, it's my first Sonos speaker.

I mostly keep automatic updates turned off on devices and software. 

The Roam uses the S2 system (gold Sonos icon, rather than the black S1 icon).