FET-SOM-RK3399: Powerful System on Module (SoM) based on the Rockchip RK3399 processor With 2GB LPDDR3 16GB eMMC - System on Module Professional Supplier - Forlinx Embedded Technology Co., Ltd.
Rockchip RK3566, RK3588, RV1109 SoC's Coming in 2020 based on Rockchip Processor Roadmap - CNX Software
RISC SBC | Pico-ITX Fanless Board with Rockchip ARM Cortex™-A17 Quad-core Processor - AAEON
Core3566 Module Rockchip RK3566 Quad-core Processor Compatible with Raspberry Pi CM4, 2GB RAM without Wireless 0/32GB eMMC Flash _ - AliExpress Mobile
Rockchip quietly releases slower RK3188T chip (you may already have one) - Liliputing
Rockchip RK3399 is ready for mass production - NotebookCheck.net News
IEI HYPER-RK39 Pico-ITX Single Board Computer supports Rockchip RK3399 processor
Core3566 Lite Module with wifi and 4GB RAM, Rockchip RK3566 Quad-core Processor, Compatible With Raspberry Pi CM4
Rockchip's RK3368 chip: Not as fast as last year's RK3288? - Liliputing
Rockchip budget quad-core processors coming later this year - Android Community