In April 2019 R&A and USGA announced, that they would publish so-called “Clarifications” to the Rules of Golf four times a year (in April, July, October and January), in which they – without re-printing the Rules book – would clarify (or change!) some of the Rules.
This April, however, USGA’s website stated:
“No New Clarifications for April 2020”.
The next time there will be an opportunity for new Clarifications is in July 2020.
You can find all Clarifications on this link.