396.24.02 (and other point releases like that) comes from our Vulkan side branch, primarily used by Vulkan developers. It’s a way for us to provide hot fixes quickly. We can sometimes recommend users to use those builds for testing fixes or work around blocking issues.
Typically, these releases only ship Vulkan fixes. For 396.24.02, we rebased the side branch from the main branch to pick up extra features and fixes, such as Xorg 1.20 support. Therefore, all the fixes in 396.24 are in 396.24.02 + more.
More precisely, 396.24.02 has:
(1) All the fixes/features from 396.24
(2) All the new fixes/features that we made in 396 after we released 396.24
(3) All the hot fixes/experimental fixes that are Vulkan only
Note that all the fixes in (3) eventually make their way to the main branch. No fix is lost.
We removed support for VK_NV_glsl_shader. It will be properly advertised in our next official release through a changelog entry. The fact that 396.24 has that extension and 396.24.02 not is due to (2) described above.
I hope that helps.