Mine arrived just after 9:30 this morning. A day early and to the wrong address - billing rather than shipping address! Good job Samsung. I restored all my apps and settings etc across from my Note 9. Very impressed, quick summary:
There was an update ready to download and install straight away
Despite being seen as a minor upgrade, it feels significantly quicker and more fluid than my note 9. I'm guessing this is more due to the storage speed improvements rather than the SoC
Charging speed with a 45w charger is nothing short of ridiculous. Mine arrived with 67% battery, I put it on charge to make and a cup of tea and sandwich and when I came back it was at 100%
DeX on Windows was exactly the solution I'd needed for various reasons hence the upgrade from a note 9, and while it isn't as fluid as normal DeX directly via HDMI it is perfectly usable and requires no effort to set up.
Speakers seem louder and clearer than the note 9
Fingerprint sensor is quick and easy, I've hated the rear scanners since they moved them from front of the S7 to the back on the S8+
Haven't had chance to check out the cameras in any detail yet
I'll add other thoughts as I come across features