If you have a gaming PC, you don't have to worry about eARC. You can run an hdmi cable to your tv directly, then run another HDMI cable (either from an onboard graphics or via a DisplayPort adapter) to the receiver. This lets you avoid potential audio latency issues with eARC. You can use onboard graphics for this as it's a non demanding task.
As for the receiver itself, if you plan on more HDMI 2.1 devices like an xbox or ps5, then yes, you'd have to wait for the next chipsets. Else, you can buy a regular receiver on the market now, or wait for the fixed units to come put and decode to get a flawed used unit cheap, or a fixed unit new.
If you do not plan on HDMI 2.1 devices like an xbox or ps5, HDMI 2.0 is perfectly adequate as UHD players and streaming devices do not take advantage of HDMI 2.1 features - HDMI 2.1 is pretty much only for gaming. This opens up a huge avenue of used but good receivers, as well as buying cheap the flawed 2.1 receivers that people will get rid of.
If you do plan on it, then you have no option but to wait. And in this case you might want to wait a year or so to make sure the chips work and are relatively bug free and scope out the situation - not all ports will support HDMI 2.1 after all, and maybe the next generation, once again you might only have 1 port usable.
As for the receiver itself, if you plan on more HDMI 2.1 devices like an xbox or ps5, then yes, you'd have to wait for the next chipsets. Else, you can buy a regular receiver on the market now, or wait for the fixed units to come put and decode to get a flawed used unit cheap, or a fixed unit new.
If you do not plan on HDMI 2.1 devices like an xbox or ps5, HDMI 2.0 is perfectly adequate as UHD players and streaming devices do not take advantage of HDMI 2.1 features - HDMI 2.1 is pretty much only for gaming. This opens up a huge avenue of used but good receivers, as well as buying cheap the flawed 2.1 receivers that people will get rid of.
If you do plan on it, then you have no option but to wait. And in this case you might want to wait a year or so to make sure the chips work and are relatively bug free and scope out the situation - not all ports will support HDMI 2.1 after all, and maybe the next generation, once again you might only have 1 port usable.