Been playing it a couple hours now; all of these opinions are still in the process of being made.
TL;DR: I like it, but this isn't the Greatest Game Ever (TM) (R) (C)
Longer:
Okay, so, let's get the bad things out the way first: This game is janky as ****. There are glitches all over the place, most of them in the "annoying but handleable" range: Objects that mysteriously float in the air; things dropping out the sky for no apparent reason, that sort of thing.
But there's a deeper level of jank that I think won't be fixable, and that's due to the way the systems in this game don't seem to be very well thought out. There's an extensive leveling and perk system, pages of skill trees and things, and little to reason to interact with them. The effects of leveling up a given attribute are so granular that it's hard to tell whether there was any effect at all.
There's a crafting system for some reason, but using it is a trap, since the game's loot system (and it is a loot system, make no mistake; everything is color-coded by rarity), is like a gimped version of Borderland's "tons of random guns" system ... except not as fun, so anything you have now might be invalidated with the very next mission you go on.
Driving feels bad on mouse and keyboard, and just sort of approaches tolerable with a gamepad. Combat doesn't feel good either; even the Deus Ex reboot games had better gunplay.
In other words, this is a CDPR game on the mechanical side.
Its saving grace is that it is also a CDPR game on the writing side. It takes a while for a theme to emerge (it only happens after the introductory stuff is out the way and Keanu Reeves starts living rent-free in your head), but I'm curious to see how the game is going to develop it down the line.
My biggest complaint about the writing is that it hasn't developed a reason for this game to by cyberpunk beyond the purely superficial trappings of neon, chrome, dirt and flying cars. Make no mistake, that surface is incredible to look at: this is a game with remarkably dense visuals, but for the moment, it just seems to be a surface. Cyberpunk 2020, the TTRPG, had a tagline of "style over substance", and this is following in those footsteps. It is a very safe game in many aspects: There's a "corporations bad" thing going on, but the corporations in question are so comically evil that anyone who isn't a hardcore ancap would agree.
However, this is big picture stuff that is just based on my impressions right now; there's still tons of content left to explore and maybe the depth I'm looking for is somewhere in there.
One standout thing in this is the game's voice cast (with one exception): They're all really good. The actress playing female V made me feel emotions for a character I only knew for an hour or two, and that's definitely an achievement.
The one exception is Keanu Reeves: His introductory ... bit, I guess? ... is very rough indeed, very much "Keanu Reeves plays Keanu Reeves playing an asshole"; it smoothes out a bit later on, but hooo boy that early performance is not good.
Overall: Yeah, I like this game so far, but temper your expectations.