I don't think that's been published yet; one way to see is make sure email notifications are turned on and working on your UTM, and manually upload the file (but don't install it) ... it will list the changes in the notification email once you've uploaded the update. Of course, when they officially announce the soft-release here in these forums, the list will be there too.
I think I know what one of them are (public knowledge now that there is a KB article about it on the Sophos Support site) -- apparently one will be able to use the compliance reports/status of Sophos Mobile Control clients to control access to the VPN (as part of Sophos Mobile Control 4.0, just released today) ... pretty cool. In the KB article it's listed as available for 9.201, but the Webadmin menu item for the integration feature is missing ... so I'd imagine it's coming soon.
· Mobile Protection feature release · * push VPN and Wifi configurations to Sophos Mobile Control · * disable VPN and Wifi for non-compliant mobile devices · . · OTP: allow to define bigger windows of time difference to better support hardware tokens Remarks
· System will be rebooted · Configuration will be upgraded · Connected Wifi APs will perform firmware upgrade · Connected RED devices will perform firmware upgrade · Fix for #31374 can cause issue if using client authentication with more than 170 groups referenced in rules Bugfixes
24445 Windows Live-ID Sign In assistant breaks Kerberos authentication 24855 Hungarian keyboard layout get lost when starting a HTML5VPN RDP session 30502 Rev. Auth.: session management with multiple profiles 30522 [BETA] Tunnel broker Hurricane Electric broken 30792 [BETA] DLP: Incorrect DLP behaviour when no routing domains are configured 31077 increase window of allowed OTP tokencodes for the very first authentication 31078 implement option for manual and automatic sync of time drift of hardware OTP tokens to UTM 31100 Import of Filter Exceptions from UTM to SUM fails 31121 DHCP mapping comments gets lost by upgrading to 9.100 [9.2] 31374 Correctly account Confd ipsets consumed by user and group networks 31508 [UBB] DynDNS: Wrong update URL for namecheap.com 31627 REDs without connection to the provisioning server can't install the new firmware after up2date to 9.2