Ubuntu 24.04 upgrades

Hello there,

I have installed Kubuntu 24.04 last week (brand new installation, not an upgrade).

The main change I do is that I have removed Firefox and Thunderbird snaps and now use packages from mozillateam ppa. Of course I have made changes into apt configuration files to avoid re installation from snap depot.

I have not see any upgrade since the installation using apt-get update / upgrade and I ask myself if this is normal ?

Is there a way to see what new packages are available into ubuntu / kubuntu depots with dates ?
May be a changelog file or something like that ?
Or may a variation of apt command showing whats new on ppa depots ?

Thanks for any help and idea.
Best Regards.
Philippe

PS : apt config modification I do

Into apt.conf.d add the file

_ file 50unattended-upgrades-firefox with

Unattended-Upgrade::Allowed-Origins:: "LP-PPA-mozillateam:${distro_codename}";

Into preferences.de add two files

_ file firefox-for-nosnaps with

Package: firefox*
Pin: release o=Ubuntu*
Pin-Priority: -1

Package: *
Pin: release o=LP-PPA-mozillateam
Pin-Priority: 1001

_ file thunderbird-for-nosnaps with

Package: thunderbird*
Pin: release o=Ubuntu*
Pin-Priority: -1

Package: thunderbird*
Pin: release o=LP-PPA-mozillateam
Pin-Priority: 1001