The GNU awk text-processing utility, gawk, has released version
5.3.0. The main new features add compatibility with “The One True Awk” (also known
as “BWK awk”); version 5.3.0 adds CSV (comma-separated values) parsing and
the ability to use u escape sequences for Unicode code points.
Read on for other changes in the release.

Source: LWN.net – Gawk 5.3.0 released