Agora has released Voice and Video SDK v3.4.0 for major mobile and desktop platforms, introducing new features such as a virtual metronome, control over audio effect files, degradation preference settings, audio mixing improvements, and an updated audio recording configuration. These enhancements aim to improve the user experience in online music teaching, karaoke, and other real-time communication applications. The full release notes for each platform can be found on Agora's website, with the latest SDK available for download.