It's not really a well-kept secret.
Details of a new Ryzen 5 APU, with onboard Radeon Vega Graphics, has been spotted on Geekbench, giving both a hint of its performance, and specifications.
The Ryzen 5 2500U APU boasts four cores and eight threads, and 4MB of L3 cache, and runs at 2GHz. On Geekbench, the APU scored 3561 in single-core performance, and 9421 running on all cores.
The 2000 series of APUs will be launched around the time of CES, most likely. Thanks to Guru3D for the notice.