Update | The Honor 8X gets an EMUI 10 beta program
Update: This EMUI beta program is also now apparently open to 6/64GB SKUs of the Honor 8X. Thanks to Diptesh Guha for the tip!
Honor India's official Twitter account had indicated that 2 of its slightly older phones would be updated to Android 10 back at the end of July 2019. Now, it appears the national division has followed through with respect to one of them: the 8X. It has just released details on an EMUI 10 beta for the device.
This involves a new trial program to gain access to the HOTA in question. However, it is only open to those who own the phone's 4/64GB SKU. In addition, applicants to this initiative (known as the Friendly User Test) need to have a Huawei ID (or set one up for the first time) prior to launching the OEM's BETA app.
Once logged in on this app, the user should navigate to Personal->Join Project->Available Projects and find the Honor 8X beta project. Access to the same may involve reporting the bugs and issues found to affect the EMUI 10 beta in question, submitting logs included.