After two weeks, since the release of watchOS 4.3.1 in public, Apple today seeded the second beta of watchOS 4.3.2 to developers with a minor bug fix update. To download and test this beta on your Apple watch, you need to have an active Apple developer account.
If you have an active Apple developer account, all you have to do is to head over to download section in your developer account to download and Install the beta configuration profile on your device. After installation, restart your Apple device and check for update from settings to get the latest beta update over the air.
Your Apple watch must have at least 50% of battery to proceed with the installation procedure of beta software, or it must be connected with a power adapter before proceeding with the installation process.
When watchOS 4.3.1 was released, no new features were introduced. However, with the release of watchOS 4.3.2, it is expected that this update contains bug fixes, discovered since the release of watchOS 4.3.1 along with other improvements to the operating system as well.
WatchOS 4.3.2 seems to be the final update to Apple watch devices, as Apple is already working on the next major release of watchOS 5, which is in development and is offered to the developers for testing. However, it is expected that Apple will soon release the beta version in public by 24th June 2018.