This was actually mentioned in yesterday’s announcement which revealed the official launch date for the new operating system albeit very briefly. Microsoft generally said that the Android app support will be making its debut in the upcoming Windows Insider’s build within the next few months. Since its inception in 2014, Microsoft has released Windows Insider preview build as a platform to let users test out new features before rolling them out to a wider audience. Hence, it is safe to assume that the Android app support on Windows 11 will only be available to end users at a much later time.
Aside from that, Intel also has its hands on enabling the native Android app support on Windows 11 through the Intel Bridge technology. Even though the runtime post-compiler came from Intel, it can be supported by AMD systems as well although obviously, it has been optimised for Intel Core-based systems.
