After a whole day playing, I mostly think the same as in Ian Skippy's post above... No crashes, only a couple visual glitches and an audio glitch, a phone hanging in the air as if the NPC failed to render, another NPC playing an invisible guitar, and a piece of distorted audio during a mission. Nothing that impacted gameplay. As far as bugs and glitches go, pre-launch reports were extremely exaggerated.
Night City is fantastic, feels huge, alive and dense. I could almost smell the grilled food and smoke as I strolled through the rainy streets across food stalls. The feel while roaming the streets is a mix of original Blade Runner with 80's punk culture. Driving is arcadey but fun, similar to GTA 5 but with way more turns.
There are tons of side activities, which will increase even more as we get "street cred". You can (and should) leave the main and side quests for a while and go play The Punisher for a bit, killing off criminals with bounties on their heads, and stopping crimes in progress.
The more scripted questlines look and sound great (great voice acting like in previous CDPR games). I do feel some lack of story focus though, in the Witcher games there was always an end goal, a major purpose going on in the background, even when strolling through side quests. In CP2077, after a whole day I still don't have a clue about what the major arc is, or if there even is one.
The combat is very meh, it's the game's major flaw. You will be shooting bullet sponges, it won't matter if you hit them on the heel or right in the forehead. AI doesn't seem very smart either. It looks like CDPR invested more in the stealth + hacking part over the brute force approach. You do have several ways to approach most missions/quests though. There are some interesting details, for instance when I killed an NPC and his body fell to the ground, another NPC who was running past it tripped over the falling corpse and fell. Found that quite neat!
As of now, it feels a bit like if Deus Ex and GTA 5 had a baby, in a world made by CDPR.