Is it worth jumping in now or waiting until the patches due next month?
That depends on what you're expecting.
If you're expecting the game Cyberpunk 2077 was advertised as being, no. It's not that game. It won't be that game after next month's patch, either.
If you can ignore the advertising or haven't seen it, then maybe. It's not a bad game in itself, the gameworld is excellent and some of the storytelling is excellent. Some isn't. I suspect the difference is between the parts of the game they actually finished and the parts they hastily cobbled together when it reached the stage of "the release date is next month and we have at least a year's worth of work left".
I played it for >100 hours on a very complete playthrough. Now I'm playing it again on a second playthrough with a different character and I'm still enjoying it. But I never saw any of the advertising before playing the game and I have a high tolerance for buggy unfinished games with a good gameworld. Although I am frequently irritated by the unfinished stories. You find a datashard or terminal entry...and it's empty, doesn't even have a title. You find another...and it refers to things that haven't happened. You find another...and it's a clue to something that doesn't exist. The fact that the game simply isn't finished can grate on the player, especially if they're the kind of player who treats open world games as primarily exploration games, exploring everywhere and reading everything. Some of the equipment mods...do nothing. Some of the perks...do nothing. They simply weren't finished.
The ingame economy is so exploitable that you can't entirely avoid exploiting it even if you try. For example, once you have enough crafting skill and perks (which you will want as crafting is very useful) you can craft some things and then disassemble them...and get more parts than you started with and parts of a higher tier than you started with. But in some cases you have to craft multiple items because the tier you get is random. For example, the armadillo mod is very useful for armour. You'll want to craft the epic version of the mod because it's better than common, uncommon and rare versions of the mod. Legendary would be better, but you can't craft that. OK...craft Armadillo mod, choose epic tier. Nope. Can't do that. You have to craft the mod repeatedly, getting a random tier up to the best tier you can make. Then you have to disassemble the ones you don't want...which leaves you with more common, uncommon and rare components than you started with. If you want to exploit the ingame economy, you can start at L1 with a can of pop and end up with infinite money and components, just from crafting alone with no crafting skills or perks. That's the most extreme case. There are a variety of more efficient ways to do it.
The UI is poop on a stick when it comes to inventory management and crafting. If you're doing any degree of crafting, you'll want to edit a config file to reduce the crafting time and probably the disassembly time too. Installing a mod for bulk crafting wouldn't be a bad idea if you're playing a character into crafting.
Driving is laughably bad. Don't even bother with a car. The only good use for a car is to act as a mobile stash. The stash is in the boot of the car (except for a few exotic cars that don't have a boot) and is shared across all cars. You can summon a car to almost anywhere very easily (they have autopilot) so that's very handy. But running is faster than a car in the city (which is most of the gameworld) and quite often faster in the badlands because you can go offroad on foot. You can go offroad in a car, but only some cars are really capable of offroading. The handling of all cars is atrocious, 1st person view is bordering on unusable and the navigation minimap is too small so you will miss turns and the traffic is too heavy for a car to be usable in many parts of the city. A motorbike is a much better choice as a vehicle and all motorbikes can go offroad very effectively. Plus there's a lot of fast travel points you can use once you've discovered them, so after a while you'll be able to run to a nearby teleporter, teleport to somewhere near your destination and run to your destination. Or summon your bike when you emerge from the teleporter and ride to your destination. Travelling is fine. Just not in a car.
There's still a lot in the game, despite it being clearly rushed to release with bits cut out and bits just not done. I paid the full £50 for it direct from GOG and I think I'm getting good value for money from it.
The radio is top quality. Tonight, for example, I had a 5.1Km journey (almost all the way across the map) to get to a location to loot a piece of clothing I wanted. I summoned my bike to ride to a fast travel point...and rode the whole way because "Good morning Night City" came on the radio. So yeah, riding time.
A quick PSA for when you encounter a bug. Minor bugs are common. Things remaining on screen when they shouldn't (e.g. the window showing the description of an item, your weapon's sight, etc). An NPC you're escorting remaining motionless in a doorway, trapping you. Being unable to use some of your abilities or to change your equipment when you should be able to (the "action blocked" bug). Stuff like that.
i) Save the game and then immediately load that save. That fixes the great majority of bugs very quickly with no gameplay lost.
ii) If (i) doesn't work, trigger a cutscene. The most reliable way to do that is to hire a prostitute. There are 2 in Kabuki, shown by lips on the map. That fixes almost all bugs not fixed by (i).