You're not missing anything, very few new features so unless you're itching to try new Cortana and/or saving virtual desktops is important to your workflow, I recommend sitting it out entirely at this point and wait for 20H2. My SB2 was "approved" for 2004 a couple of weeks ago and it's been wonky since. Cortana responds to random sounds as if the wake word was used and it occurred so frequently I disabled her from responding to it. Plus I've had at least a half dozen random blue screens and reboots and Citrix sessions freeze regularly. All were never problems before, especially blue screens/reboots which I can't remember the last time they occurred prior to 2004.