It has been slow going since Google announced Android Apps coming to Chrome OS last year. There were only 3 Chrome devices supporting Android apps in the Stable Release channel. However, withing the last couple of months, the number of devices is slowly expanding.
Android apps are officially supported on the following devices (as of May 8, 2017);
- Acer Chromebook R11
- A Open Chromebox Mini & Chromebase Mini
- Asus Chromebook Flip C100PA
- Google Chromebook Pixel
- Samsung Chromebook Plus
See the full list of Android Chrome Devices here
Google had announced that Android Apps would become "more official" along with the release of the Samsung Chromebook Pro in April 2017. However, it is now May and neither one has come to fruition.
Still, this delay is a good thing. Google does not want to release a half-finished product full of bugs/glitches to the market just to meet a deadline. Other technology publications have observed that many Android apps appeared jittery, broken. or just looked bad on bigger screens running on Chrome OS.
Even with these reasons in mind, Google is now under pressure to release this feature to compete with the upcoming Windows Education devices. Microsoft has announced that Windows Apps will run on Windows 10 S, the Microsoft browser-based equivalent to Chrome OS.