> Do they release newer kernels for the LTS releases like Canonical does with Ubuntu LTS?
As far as I can tell PopOS is a pretty light layer on top of vanilla Ubuntu. You can still install everything from the Ubuntu repos etc.
> Do they pack ZFS in the kernel like Ubuntu?
I did a conversion and my ZFS install came over just fine (and my pool import from my janky CentOS built pool was shockingly simple-- only hiccup was that I didnt have SMB and NFS installed yet when I did it so the exports failed, but everything else worked).
Now my only complaint is that the Ubuntu implementation of Gnome does superkey+arrowkey Windows style AeroSnaping and In the two days or so I used it I got really used to it and that is not the default behavior in PopOS and haven't figured out how to tweak it yet. Its a really nice desktop environment and I have heard great things about the Pop Shell but havent played with it much yet. Now I just need to figure out how to prune out all the snap crap I installed and all the libraries I installed trying and failing to compile stuff from source. I am lost without yum. I know people hate it but I know it like the back of my hand and apt is different enough (and Canonical documentation is laughable compared to RHEL) to make me feel a little lost in the weeds. But native ZFS and Nvidia have been a godsend. A modern implementation of kvm/qemu is super nice-- my VMs are so much easier to manage now. And I'm really looking forward to playing with Wireguard again now that it has kernel support.