In preview builds of Windows 10, Microsoft is experimenting with new Bluetooth technology. The most recent preview build include references to Bluetooth EATT, which is a new feature that aims to improve the performance of the Bluetooth connection.
Microsoft has changed the way it is testing Windows 10 updates with Insiders. Fast Ring releases are no longer tied to a specific Windows 10 feature update, which means we don’t know when Bluetooth improvements will roll out to the general public. It may end up in Windows 10’s Fall 2020 update or in some other new feature updates.
In Windows 10 Build 19541 or newer, there are signs of work to support Enhanced Attribute protocol (EATT), a new technology introduced with Bluetooth 5.2. References to ‘BluetoothEattPdus’ and ‘BluetoothGattRobustCaching’ were spotted in Windows 10 builds, but the new feature cannot be enabled at the moment.
Unlike Bluetooth 5.0, version 5.2 isn’t a huge leap with a lot of changes, but EATT could significantly improve performance.
Enhanced Attribute protocol (EATT) is an improved version of the Attribute Protocol (ATT) and it also includes improvements for the Generic Attribute Profile (GATT). In Bluetooth 5.2, GATT performs more aggressive caching to allow connections to happen faster at reduced power usage.
It also leads to reduced end-to-end latency and you can expect improvements in audio devices. From the security point of view, EATT works over an encrypted connection and it has security advantages over ATT.
The current state of Windows Updates
Microsoft has finalized Windows 10’s 20H1 update and the company is working on 20H2. Unlike 20H1, this year’s fall update could be a service pack-like release with a strong focus on bug fixes.
Microsoft is also working on an unknown Windows 10 update and Windows 10 X, but the specifics are not known at the moment.
The next feature update for Windows 10, known as 2004, could be released to the mainstream users later this spring. Microsoft will roll out the cumulative-update-style 20H2 feature update for Windows 10 in the second half of this year.