Originally Posted by AV_Integrated
Most large format displays aren't really suited for gaming as it is. Sync issues and lack of higher refresh rates combined with poor lag on the newest DLP models certainly makes things more difficult.
Then you get the nearly complete lack of HDMI 2.1 equipment on the market, and it becomes something of a joke.
I have no idea what portion of HDMI 2.1 that any new consoles will actually be a part of and what features will be supported at this time, but they are likely designing them in an attempt to be relevant six years down the road when displays with HDMI 2.1 actually exist.
Since projectors already are way behind television technology, and almost no TVs actually have this capability, I wouldn't expect projectors to be leading the way on this at all.
Ask again in four years to see if anything exists.
Also, it will give you time to find out if console gaming has finally bit the dust.
This post is almost entirely misinformation. Large format displays can be perfectly fine for gaming. I've spent the last couple of years gaming on a Panasonic 1080p projector from 2008 that only had 16 ms of input lag, and now I'm on an Epson 5050ub that has 24 ms input lag, both of which are perfectly fine even for FPS games (though you may notice the lag if you're accustomed to 1 ms lag on a gaming monitor). 24 ms is faster than you'll find on a lot of 4k TVs, but again, slower than a computer monitor. Virtually any projector nowadays is going to support 60hz, so I have no idea what's meant by "sync issues and lack of higher refresh rates," as this is total nonsense.
The HDMI 2.1 features included in the next-gen consoles is well-documented, at least for the Series X, so this is no mystery either. The new LG OLEDs announced at CES do have HDMI 2.1 and some of the same features as found in the Series X's take on 2.1, some quick research on this will give you the details.
Finally, the idea of consoles "biting the dust" in four years is ludicrous, unless you think that the likes of Stadia and Project X-Cloud and other game streaming services will have completely usurped the console market by then (hint: they won't). If anything, PC gaming would be more likely to bite the dust by then (hint: it won't, either) since as tech continues to progress, it becomes less and less necessary to have a larger box comprising the CPU, GPU, SSD, power supply, RAM, etc. Game consoles since 2013 have been using X86 architecture just like PCs, so the difference between a game console and a PC at this point comes down to the size of the box and the fact that you can run non-gaming applications on a PC.
To the OP: You will get a *massive* benefit by upgrading to a Series X, especially if you're coming from a 2013 Xbox One, regardless of whether your whole system (meaning console, cables, AVR and display) is 2.1-compliant. Features like VRR and ALLM are cool, but they're icing on the cake, and the vast majority of the features of the new consoles will not depend on whether you have HDMI 2.1. Raytracing, faster load times, larger game worlds, better AI, just downright better graphics - none of these have anything to do with HDMI 2.1 vs. 2.0.
As for 4K 60fps vs. 4K 120fps vs. 8K 60fps vs. 1080p 120fps, and their relation to HDMI 2.1 vs. 2.0: This is where it gets stickier, but everyone in the industry seems to be under the impression that these consoles will be targeting 4K 60fps for the vast majority of games, a spec that's perfectly possible now with HDMI 2.0. 1080p 120fps is also possible with HDMI 2.0, and there are some (rather affordable) projector options supporting 1080p 120fps (again refuting the other poster's point about projectors not having high refresh rates).
If you don't have HDMI 2.1, you'll be missing out on 8K 60fps and 4K 120fps. As powerful as these new consoles are, even the beefier Series X is highly unlikely to support many games at these resolutions/frame rates, with exceptions of very simple looking games like Minecraft, for example.
Long story short, there is no reason to feel like you'll get no benefit from the Series X if you don't have HDMI 2.1. In fact, I'd bet that 99% of the people buying the Series X and PS5 over the next two years will be enjoying the heck out of it without
having a full HDMI 2.1 setup.