Links for the discussion about the changes in temple recommend interview questions.
Handbook 38.5.5 was updated in August 2023 to include this statement about the garment.
Wearing and Caring for the Garment Members who receive the endowment make a covenant to wear the temple garment throughout their lives. The temple garment is a reminder of covenants made in the temple and, when worn properly throughout life, will serve as a protection against temptation and evil. The garment should be worn beneath the outer clothing. It should not be removed for activities that can reasonably be done while wearing the garment, and it should not be modified to accommodate different styles of clothing. Endowed members should seek the guidance of the Holy Spirit to answer personal questions about wearing the garment. It is a sacred privilege to wear the garment and doing so is an outward expression of an inner commitment to follow the Savior Jesus Christ. It is a matter of personal preference whether other undergarments are worn over or under the temple garment.
Here is the letter from April 2024 with the new changes to the statement about the garment.

What could unlock LDS church growth in Japan? It says two words, says scholar. And I'll tell you the story by reading the very first part of this, and then we have the conversation. So here's the story. The high -ranking business exec didn't know what to do. A faithful Japanese Latter -day Saint, he had committed to never allowing a drop of green tea, considered along with black tea and coffee, to be against the faith's dietary code to pass his lips.

Some links for the discussion on the Family Proclamation.
"A proclamation is different from an official declaration, a doctrinal exposition, or statements on policies. Some of these come from only the First Presidency, some just from the Quorum of the Twelve, and some from both the presidency and the quorum."
"Doctrines outlined in the proclamation apply as much or more today as they did in 1995 when the First Presidency and the Quorum of the Twelve Apostles issued the document, which proclaims to the world the importance of the family."