Don't expect it quickly. AMD rushed Ryzen to market and went top down this time (fast chips first).... with good reason. Ryzen seems to scale exceptionally so power draw is not an issue, but the power management drivers are not even 1.0 now on desktops (See the fact that everyone reviewing so far has to use it in High-Performance mode to evade software clock stepping so it clocks in 1ms increments).
ASUS, HP and Dell etc etc already have enough thermal challenges presented by the idea of many-core budget laptops, but one that cannot step in software will use far more raw watts than one that can (hardware stepping is not context aware at all, so all chips have to be in a ready-to-go state and cannot deep sleep). I believe the issue is a programming one on Windows side of things.
Simply put, AMD wants to do things that Windows doesn't provide the ability to right now... It happened with Phenom 2 and Windows of the time never actually gained the ability to fully use the power management stack of that chip. Knowing that the problem is to do with the speed at which AMD is able to power step, and that is a rather fundamental issue from the point of view of a Laptop maker (what goes into your Laptop BIOS better work because it probably will never be updated by 95% of users), I expect you won't see mobile chips in units until at least September, probably next year.