More coming soon... but some starter material for now:

Convenient access to complete federal wildlife law statutes:

[Source: US House of Representatives Office of Legal Counsel compilation; learn more from the Gallagher Law Library Blog post]

• Endangered Species Act
• Wild Free-Roaming Horses and Burros Act
• Marine Mammal Protection Act
• Migratory Bird Treaty Act
• Lacey Act Amendments 
• National Wildlife Refuge System Administration Act

Easy references to the August/September changes to ESA regulations:

all draft rules were published 25 July 2018 in the Federal Register;
all final rules were published 27 August 2019 in the Federal Register;
all finals became effective 26 Sep 2019.

Blanket 4(d) rule
Draft -- https://www.federalregister.gov/documents/2018/07/25/2018-15811/endangered-and-threatened-wildlife-and-plants-revision-of-the-regulations-for-prohibitions-to
Final -- https://www.federalregister.gov/documents/2019/08/27/2019-17519/endangered-and-threatened-wildlife-and-plants-regulations-for-prohibitions-to-threatened-wildlife

Foreseeable future, delisting, unoccupied critical habitat
Draft -- https://www.federalregister.gov/documents/2018/07/25/2018-15810/endangered-and-threatened-wildlife-and-plants-revision-of-the-regulations-for-listing-species-and
Final --https://www.federalregister.gov/documents/2019/08/27/2019-17518/endangered-and-threatened-wildlife-and-plants-regulations-for-listing-species-and-designating

Interagency cooperation, alternative consultation
Draft -- https://www.federalregister.gov/documents/2018/07/25/2018-15812/endangered-and-threatened-wildlife-and-plants-revision-of-regulations-for-interagency-cooperation
Final -- https://www.federalregister.gov/documents/2019/08/27/2019-17517/endangered-and-threatened-wildlife-and-plants-regulations-for-interagency-cooperation

Miscellaneous
FWS web page summarizing purpose of changes
FWS press release from FWS announcing final rules