Another release that's been in the pipeline for a while, the latest version of OS X is now available.
The pleasant surprise is that it's free to everyone who owns a Mac that's capable of running it, which might make you think that upgrading to it right now is a no-brainer. However...
Should I download it?
Given that we don't yet know if there are any compatibility issues with the big DAWs, plugins and audio interfaces, we'd advise holding off for at least a few days until the dust settles and any problems come to light (unless you're absolutely desperate to try the new version of GarageBand, that is).
The good news is that, because Mavericks is free, developers will be aware that a lot of Mac users will update to it and should make it a priority to make sure their products work with it.