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From the Webpage :
" No HDMI 2.1 receivers were officially announced at CES 2020 but Yamaha's 2020 line-up of Aventage receivers will seemingly be one of the first to arrive with HDMI 2.1. The Yamaha RX-A8 (11 channels), RX-A6 (9 channels), RX-A4 (7 channels) and RX-A2 (7 channels) were detailed in a now-removed video and summarized in German Hi Fi forum."
For those who understand German , here is a link to the German Hi Fi forum post.
By betty boop
A thread needed on this I think, as probably some questions. Article below is a good one as cnet has always been on this topic. At end of it hdmi itself the the connector doesnt change. As always just because something is hdmi 2.1 specd ie the gear doesnt mean it will have all features enabled. As for cables we know they dont have specs number ie hdmi 2.1... so in this case you might need a new cable ie while todays cable are specd as "High speed" for SOME features and bandwidth of hdmi 2.1 you might need the new "Ultra high speed cable" but dont rush out buy one as quite short and quite expensive just as I wouldnt suggest to rush out buy 1st thing comes out hdmi 2.1 specd as unlikely mean a lot as may not support much in the spec to warrant in any case.
keep in mind this spec is really just a future proofing of the hdmi spec. so doesnt as such mean much for anything now or what might be coming for a long while in the future...
"OK, let's get this done up front. Yes, there's a new cable with HDMI 2.1, but you don't need to upgrade. At least not yet.
HDMI 2.1 brings new features and a lot more bandwidth to the venerable cable and connection. However, it's going to be many years before you'll see it on the average television. If you've got your eye on a fancy new high-end TV though, there are some things you should keep in mind. We'll get to those further down.
The good news is, the connector itself isn't changing. Your current cables will work even when you finally get a device with HDMI 2.1. You will need new cables to take advantage of the new features and resolutions possible with 2.1 but again, it will be years before those become commonplace."
"Today's devices mostly use HDMI version 2.0, or one of its several iterations. We'll see a handful of TVs in 2019 with full or partial 2.1 implementations.
How does that affect you? Not much. You can't upgrade your current TV to 2.1 spec, and there are no HDMI 2.1 sources yet. This update is quite forward-thinking and takes into account formats and resolutions that won't be widely available for years. However, if you're considering certain new TVs in 2019 and beyond, you should make sure you understand the limitations of 2.0, and what 2.1 will offer if you choose to wait on your TV purchase."
"The short version
Don't like reading (much)? Allow me to fire some HDMI 2.1 bullets.
The physical connectors and cables the same as today's HDMI. Improved bandwidth from 18 Gbps (HDMI 2.0) to 48 Gbps (HDMI 2.1). Can carry resolutions up to 10K, frame rates up to 120fps. New cables are required for higher resolutions and/or frame rates. The first products will arrive in 2019.
The increased resolution and frame rate possibilities are a futurist's dream:
4K50/60 4K100/120 5K50/60 5K100/120 8K50/60 8K100/120 10K50/60 10K100/120
You should be able to get 4K/60, and a basic 8K/30, with current cables, but the rest will need an Ultra High Speed HDMI cable. More on these new cables below.
On the color front, 2.1 supports BT.2020 and 16 bits per color. This is the same as HDMI 2.0a/b, and is what makes wide color gamut possible.
Those are just the highlights, though. Read on for the details.~"
The HDMI Forum on Wednesday announced key specifications of the HDMI 2.1 standard, which will be published in the second quarter. The new standard will increase link bandwidth to 48 Gbps and will enable support for up to 10K resolutions, new color spaces with up to 16 bits per component, dynamic HDR, variable refresh rates for gaming applications as well as new audio formats.
The increased bandwidth of HDMI 2.1’s 48G cables will enable support of new UHD resolutions, including 4Kp120, 8Kp100/120, 10Kp100/120, and increased refresh rates.
Moreover, the new HDMI 2.1 standard brings support for dynamic HDR metadata, enabling content makers to control levels of color, contrast and brightness on a frame-by-frame basis.