Currently, node access for tagged nodes is updated when TAC's configuration is changed, or when taxonomy terms or vocabularies are created or deleted. In D7, node access should also potentially be updated when content types are modified in a way that alters their taxonomy fields (and therefore their taxonomy terms) are modified.

Field API reference:
http://api.drupal.org/api/drupal/modules--field--field.module/group/field/7

Comments

Retagging according to standard.

Status:Active» Postponed
Issue tags:-D7 stable release blocker

So, this isn't actually relevant because currently nodes themselves aren't updated on field modification. Even deleting the field doesn't untag the nodes; see #1065814: Vocabulary terms remain after removing field from content type.

Postponing for the above issue.