The Association of American Literary Agents (AALA) recently announced some major revisions to its Canon of Ethics, a series of guidelines for ethical practice to which member agents must adhere.
(Note: the AALA was formerly known as the Association of Authors' Representatives [AAR]. The name change was made in 2020. The legacy website, with the older version of the Canon, is still online.)
The two most significant changes are to Clause 5, with members now prohibited from participating in packaging fees on clients' TV and film deals, and from accepting producer fees without clients' written permission; and to Clause 8, which now permits members to provide paid editing services (formerly, members were prohibited from providing such services).