Why can't we get the new zen UI 6 on zenphone 5z like Zenfone 6

I have already got a pie update on my zenphone 5z, my friend bought a Zenfone 6 it is also having Android pie out of the box but feels more like stock Android and my phone doesn't..
I request please update Zenfone 5z with the Zenfone 6's new UI.
And if u can't then tell us why?
I request please update Zenfone 5z with the Zenfone 6's new UI.
And if u can't then tell us why?
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Comments
ZenFone 5Z is planned to get an update to Q - any changes to ZenUI for 5Z would happen in conjunction with that. ZenFone 5Z can join the Google Q beta now.
How ZenUI will look in 5Z is not set in stone, we will update more as we get more information.
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However, it does not mean it will not get it.
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