MediaTek's newest Dimensity 900 SoC is now official with an integrated 5G modem that supports sub-6GHz networks, two ARM Cortex-A78 cores, six Cortex-A55 cores, a Mali-G68 MC4 GPU, support for LPDDR5 RAM and UFS 3.1 storage.
https://www.notebookcheck.net/MediaTek-Dimensity-900-6nm-chipset-with-integrated-5G-modem-launched-for-mid-range-smartphones.539348.0.html