NSD (Authoritative DNS server in base) has been updated to 4.13.0 in #OpenBSD -current, after being at 4.9.1 due to significant upstream changes, such as replacing the flex+bison zone parser with a new SIMD optimized implementation.
https://marc.info/?l=openbsd-cvs&m=175718025319783&w=2
This follows last weeks update of Unbound to 1.23.1.