The ThinkPad A series is a line of Lenovo ThinkPad laptops created solely for the use of AMD CPUs. According to a leaked roadmap that Notebookcheck attained, this series could be refreshed in the third quarter of 2018. It seems likely that these refreshed models will be the ThinkPad A285 and ThinkPad A485 and that they will feature Ryzen Mobile.
https://www.notebookcheck.net/Lenovo-ThinkPad-A285-A485-will-likely-be-released-in-the-third-quarter-with-Ryzen-Mobile.287194.0.html