I have just started with HA and successfully created my first Matter/Thread mesh. By checking the TBR logs I could see that the TBR uses Thread 1.3. Is there a way to see which Thread version(s) are used by my Thread devices? I clicked through the “interview” data of my Matter nodes, but I couldn’t find any Thread version information. Or am I missing something?
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I have looked for it in the Matter server too, but have not been able to find anything either, so maybe @agners can help here?
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There is a “Network Commissioning Cluster” defined (usually on Endpoint0) that has an attribute (x0A) that contains the “Thread Version”. However I don’t think this is a mandatory supported attribute so it may not be supported by a device. Its not showing up on any of my devices in the Matter Server. But this is the best I could come up with.
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Thanks for the hint. I just checked my Eve Energy and Eve Weather devices. I couldn’t find the attribute (x0A) either. But somehow the nodes need to negotiate the feature set of Thread, don’t they? It will make a difference if a device uses Thread 1.3 or 1.4 with all the changes.
I just realized that HA’s TBR still uses Thread 1.3.0, although 1.3.1 is available since 2023. Is there a reason?
I suspect HA’s OTBR is pulling from upstream otbr stable release which I understand is version 1.3.0.
BTW, looking at the Thread 1.4 spec, it has a table of history of releases, and it does not show a 1.3.1.
As I read about it, Thread 1.3.1 is/was/would have been about the enabling of NAT64 and TREL: Thread 1.3.1 Feature Enablement in the Reference · Issue #50 · openthread/ot-reference-release · GitHub.
But NAT64 and TREL seem to be available with 1.3.0 too.
Comes with Thread 1.4:
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Any indication when Thread 1.4 will be available for „ZBT-1“ and HA‘s OTBR addon?
Thread 1.4 seems to be already available for Espressif:
https://www.matteralpha.com/how-to/how-to-build-a-thread-1-4-border-router
Or is the release of Thread 1.4 skipped with Thread 1.5 already at the gates?
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Not to necro but I’m stuck on 1.3.0 too, I tried webflasher to see if that changes anything with skyconnect but seems that’s going to be limited to dongles made after a certain date? Noticed that firmware flashing functionality has been removed from the addon itself too
Id assumed that HomeAssistant is usually the first to run on new versions with others using it for testing and following after, but this seems the reverse, with Samsung SmartThings and Apple on newer versions but my HASS Hub stuck on lower 
Hopefully thread version upgrades come soon in any case though
There are rumors that ZBT-2 will be released on the 19th of November. I hope strongly, that revamped and updated Matter and OTBR Addons will come with it.
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Still Thread 1.3.0 even when using the new ZBT-2 
(and with everything set to the latest beta testing updates aswell)
The ZBT is just an antenna.
It is the OTBR addon that needs to be updated to support Thread 1.4 and it is the Matter addon that needs to be updated to support Matter 1.4 or 1.5.
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Since Matter and Thread are key technologies clearly in the spotlight for the Nabu Casa/HA team, it would be great to increase transparency around their development roadmaps.