You can add Z-Wave things to SmartThings using a Home Assistant Matter Bridge. And maybe others will be developed and marketed.
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See above 
kinda not related. The Aeotec hub (V3) will continue to be supported on the ST platform along with the V2/V3 hubs. What I was pointing out is that Aeotec plans to stop selling the Aetec V3 hub at the end of 2026 thus they will discontinue selling the hub. I copied the line directly from the article so sorry if it confusing with the single/partial quote.
I edited the line to reflect discontinue (selling the) V3
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Ok well the Aeotec rep on Linkedin says they will keep the V3 available, who knows for how long?
If someone releases the mythical zwave to matter bridge then it could connect all the zwave devices to the V4!
The advertisements says it supports up to 300 devices per unit. Does this suggest 2 units up to 600 or are SmartThings still forcing the 300 limit per location.
I think Aeotec missed a trick with the naming of the new hub. Naming a hub which supersedes one commonly known as the SmartThings hub v3 as the āAeotec Smart Home Hub 2ā might be a bit confusing for some. 
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I see no evidence that Aeotec is selling the V3 now!
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I think thatās just Matterās multi-admin feature.
Multi-admin just means that a device can connect to multiple controllers at the same time. Controllers donāt connect to other controllers in Matter, itās not how multi-admin works.
The only scenario where the new Aeotec hub could connect to other Matter controllers as advertised is if it had Matter bridging features. Weāve seen that in Aqara hubs for instance, theyāre both Matter controller and bridge, and itās the bridge part the one that connects to the controllers of other platforms to expose non-Matter devices like Zigbee ones.
Well they got as far as having azwaveRequiresExternalHardwareflag in the hub characteristics and yes I know we canāt read anything in to that. Personally I canāt imagine the hub team having having gone ten years without someone having played with the hole in it.
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It is marketing material on the side of the box so isnāt going to survive robust technical analysis. Other Matter controllers can use the hub as a TBR so the statement is perfectly true and indeed useful in a vague kind of way.
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It woud not be true either way, itās like if Asus said that their WiFi routers connect to Matter controllers because they can use them to add Matter over WiFi devices.
Itās just an empty claim that sounds cool like thereās interoperability but has no meaning, probably to counter other hubs that do connect to Matter controllers because they can bridge devices to Matter.
Just like announcing local-first and local control when the home network is offline. Itās the selling point of other solutions and maybe someone will read it and think ācool! Iāll buy it, I want to be able to control my devices offlineā, only to later discover the app needed to control the devices requires Internet because it is not local-first as claimed. Again, unless the new hub supports something that older ones not and has not been announced yet.
So, if it doesnāt have Z-Wave, I guess itās not a useful upgrade for my v2 or v3, which probably wonāt last forever, because I have quite a few Z-Wave devicesā¦
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Shop Aeotec Smart Hub 2 (SmartThings Hub V4).
?
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Iām not saying this is what the statement for the V4 means, but there is another way, which is currently in use. Smartthings has a special agreement with Google to share onboarding information for new devices so that they automatically get added to both systems.
This uses the multi admin feature, but involves direct communication between the two matter controllers without either being a matter bridge.
And itās only specific third-party matter controllers by special arrangement.
Again, I donāt know if thatās what the marketing statement is referring to, but it does exist.
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That doesnāt involve the hub connecting to other Matter controllers, itās between apps so the user doesnāt need to click āshareā and select āSmartThingsā. In Android sharing devices between platforms is already super easy, you donāt even need to scan QRs or codes, feels like magic.
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Well Iāve never seen any sign of it. All my SmartThings Matter devices have had to be added manually to Google and vice versa.
It is a smooth process but you have to manually initiate it.
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Likewise at this house. Sad, because SmartThings is where I got started in home automation years ago, but the writing is on the wall. The only hope for one of these hubs to end up in my houseāwhich is almost exclusively Z-Wave at this timeāis if they take the time to make the USB port take one of Aeotecās several Z-Wave sticks, including the new Z-Stick 10 Pro, that.supports Z-Wave Long Range (ZWLR),
But, Iām betting, āNo!ā on the outcomeā¦
In the meantime, I am very happy with my Z-Box Hub and am finding it does (almost) everything I need in our home. Having invested so much in Z-Wave devicesāincluding a number of them from AeotecāI am not about to rework the entire 40+ device installation I have currently. 
But, thereās still a lot of reasons to remain active here on the forum. Plenty of good ideas, solutions, and discussionsā¦ 
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My nephew bit the bullet a couple of years ago and went with Hubitat because he didnāt like what was going on, but I donāt think he likes it at well, especially the interface. Oh well. I just got the Aeotec Hub for some matter locks so if the v2 dies, maybe I can migrate to Aeotec while it lasts.
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