Xiaomi has already indicated that its Redmi brand's 2022 K50 flagship smartphones will launch with some of MediaTek's latest Dimensity SoCs. Now, the OEM has pointed out that this will also make them the world's first Bluetooth 5.3 mobile devices. They are also now slated to support a new audio codec on top of that.
https://www.notebookcheck.net/Redmi-teases-the-impending-K50-series-as-the-first-smartphones-to-launch-with-Bluetooth-5-3.607972.0.html