First Huawei phone running HongMeng OS will reportedly launch later this year
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There is just so much confusion surrounding Huawei's placement on the U.S. Customs Department's Entity List that no one knows to expect next. We all thought that on June 29th, when U.S. President Donald Trump announced a truce in the trade war between the U.S. and China, that Huawei would be able to access some of its U.S. supply chain. This wasn't something that we, the media, made up. President Trump himself said the following that morning, "U.S. companies can sell their equipment to Huawei. We're talking about equipment where there's no great national security problem with it."
First Huawei phone with HongMeng OS expected to launch later this year
Once Google cut ties with the manufacturer, Huawei no longer had access to the Google Play services version of Android. This is the version with the Google Play Store, core Google apps and security updates. Huawei was reportedly working for years on its own Android replacement, and once Google dropped out, Huawei seemed to put its plan in action. First, it trademarked the HongMeng name in European markets and it was assumed that this was the name of Huawei's new operating system. But confusion reigns here too. A couple of weeks ago a Huawei senior vice president and board member by the name of Catherine Chen said that HongMeng was not developed for smartphones and was made for "industrial use" with a focus on security. And this seemed to dovetail with another report stating that Huawei was testing a Russian operating system called Aurora. The latter is based on the open-source Sailfish OS which in turn evolved from MeeGo.

The Huawei Mate X will have the Google Play services version of Android pre-installed
The Global Times cites a source who says that Huawei is currently testing how compatible HongMeng is with Android apps. This unnamed source also says that HongMeng offers cryptographic features allowing user's personal data and privacy to be better protected than they are on Android. Huawei's operating system, like the Fuschia OS currently being developed by Google as a possible Android sequel, uses a microkernel. This will allegedly make it easier to run AI functions and allow HongMeng to be used on multiple platforms. Huawei will try to have as many developers as possible write apps for the new operating system.
Since it was announced back in February, the foldable Huawei Mate X will use Android when it is released next month. Any model that was developed after May 16th, when Huawei was put on the Entity List, cannot use the Google Play version of Android. And that seems to include the Huawei Mate 30 line, which might not be announced until the fourth quarter of the year.
Things that are NOT allowed: