DeepStream 6.0.1 can be used together with JepPack4.6.2.
JetPack 4.6.2 is the latest production release, and is a minor update to JetPack 4.6.1. JetPack 4.6.2 is the same as JetPack 4.6.1 but includes L4T 32.7.2 which brings in security fixes ( JetPack SDK 4.6.2 | NVIDIA Developer)
That’s correct, 4.6.3 is a bug fixing release for 4.6.2, so same version of deepstream is used.
Normally the old document is not updated, the changes is described in the new version, here it is JP4.6.3 to address its change.