Well, it is the eternal doubt with the hardware 😀 Do you need it right now? Can you wait? Is it for work, leisure, whim? Do you need the latest and most powerful? buy the current cheapest?
You will have to see your urgency and needs, if you need to change your graphics card right now and it is for work, buy what you have available now.
If you really don't need a change now, and you can wait, the current hardware will be cheaper later, and buying the new one as soon as it goes on sale is expensive. And it seems that what will come out first will be an RTX 3090, that is, a range above the current 2080/2080 Super, that has to be very expensive 😀

I was also thinking of upgrading my gaming pc, right now I have the money but I don't know if it's worth waiting for rtx3000 and the new zen ones, they arrive for Christmas with it

If it is worth the wait, I recommend it 100%

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I dedicate myself to the installation of fingerprint reader Enterprise