When depositing in SWH a directory with the content and a revision with the metadata are created.
There is no notion of release.
When pointing to SWH from Wikidata we can only use the swh:1:rel:<id> property.
We wish for T1752 to have links from software entities in Wikidata to software releases archived in SWH.
On the other hand, not all deposits need a release.
This is why only deposits with releaseNote are concerned and the entry for this metadata should be the message of the release.