As evidenced in the bootstrap process, there were some friendly amendments made to address the delta between the root zone snapshot and the changes that had occurred after it was taken.
As evidenced in #6, there were some additions that the bootstrap process missed, but in addition to the zones being added to the ICANN root, there are zones also being removed when applicants opt to cancel them.
From time to time, ICANN updates the following file:
https://www.icann.org/resources/registries/gtlds/v2/gtlds.json with adds/changes/removes. The most recent update releases two IDN TLDs from Richemont, and .aigo
The Public Suffix picks up the deltas and auto-PSs them https://github.com/publicsuffix/list/pull/1059
These changes happen from time to time, and this leaves the option of releasing these in the handshake namespace.