There have already been some hints that Asus may stock Ryzen 9 4900HS-powered versions of the ROG Zephyrus G14 in the future. Most recently, they may have been corroborated by new additions to the site for a Danish retailed called Power.dk. It claims to have several upcoming notebooks from this OEM, the putative top end of the G14 spectrum included.
It is characterized as the ROG Zephyrus G GA401IV on this website. This does indeed translate to the previously-spotted Ryzen 9-based SKU, which also has other top-end specs such as 32GB of RAM, RTX 2060 Max-Q graphics, a 1TB M.2 SSD and the notebook's WQHD display option.
Power.dk also now offers a different G14 variant - although it does not have the 7 4800HS as may be expected. Instead, it is apparently the GA401II, or the rumored 5 4600HS variant. This option has a GTX 1650 Ti card, 16GB of RAM, a 512GB solid-state drive and an FHD (and 120Hz) screen.
Therefore, this leak may also outline the full range of Zephyrus G14 price-tags (for Northern Europe customers, at least). The GA401II is set at 10999 Danish krone (DKK, or ~US$1615), whereas the full-fat GA401IV goes for 18999 DKK (~$2791).
This may seem a little steep; however, Power.dk proceeds to outdo itself with an additional 2020 Asus pre-sale listing. This one is for a heretofore-unseen ROG Strix G732, a 17.3-inch model equipped with a Core i7-10875H processor, an RTX 2070 Super card, 32GB of RAM and a 300Hz refresh rate. It is priced at 19999 DKK, or ~$2937.
Finally, the same website now also lists 2 new TUF Gaming models, both of which are powered by the Ryzen 5 4600H APU. Oddly, they have the same price (6999 DKK, or ~$1028), despite having 2 different screen sizes. These FX706 and FX506 SKUs have 17.3- and 15.6- inch FHD displays respectively, and are both also equipped with GTX 1650 Ti graphics. The FX506 has 16GB of RAM, though, whereas the FX706 has 8.
With the exception of the "new" ROG Strix, all of these notebooks can be ordered from now. However, the website also states they will not be available to ship until June 2020.
(Thanks to a reader for this tip!)