I've found an issue with the new Budgie that probably won't matter to most folks, but I thought I'd mention it.
I maintain a set of VMs for all four current Solus editions, plus Xfce. They're useful for confirming reported problems, and for providing screen captures to help answer questions for new users. So that I can quickly return them to a known condition when I start one, I've enabled all of them to hibernate.
Thus, they can be shut down when I don't need them, but quickly return to a useful state when I start one of them. Each VM has 4 GB of RAM, and is installed on a virtual hard drive that includes a 6 GiB swap partition.
After installing this last update and rebooting, I was curious about the new Budgie version. In the VM's four desktops, I started a terminal, Nemo, Firefox, and the Budgie desktop settings. After exploring a bit, I told the system to hibernate. But when I launched the VM again, that previous session was not present. The desktops were all empty, and of course, none of those applications was running.
I have no idea whether the session wasn't copied to swap before the VM was shut down, or it couldn't be restored from swap when it was restarted. I just know that hibernating didn't work. As I said in the beginning, this "problem" probably won't affect many people at all. But all my other Solus VMs hibernate and restore as they should (and so did Budgie), so something's definitely not working with my new Budgie VM.