Prepurchase Z9X 8K Questions

I have the original 4K Z9X player which I like a lot, but am thinking of upgrading to the new Z9X 8K.

1. Is the 8K model the same general physical size as the old Z9X?

2. Does the 8K model use the same IR codes (I use a Logitech Harmony Remote).

3. Does the 8K model play AV1 and VP9 formats reliably, in addition to standard H264 and H265 MP4?

4. Is the file based media player (not the movie wall) the same as the old Z9X?

 

https://www.zidoo.tv/Product/index/model/Z9X+8K/target/UXVVvon[ld]QlVKKmVViAFMcQ==.html

 

1. Yes.
2. Yes.
3. Yes.
4. I guess so (I rarely use it).

 

4) Yes