The Bluetooth SIG published the Bluetooth Core Specification Version 5.2 in 2019. The new specification adds the features:

• LE Audio: Announced in January 2020 at CES by the Bluetooth SIG, LE Audio will run on the Bluetooth Low Energy radio lowering battery consumption, and allow the protocol to carry sound and add features such as one set of headphones connecting to multiple audio sources or multiple headphones connecting to one source.
• It uses a new LC3 codec. BLE Audio will also add support for hearing aids.

• Enhanced Attribute Protocol (EATT), an improved version of the Attribute Protocol (ATT)
• LE Power Control
• LE Isochronous Channels