As you mentioned, this is an unimportant patch since it affects only tm_isdst. What matters is that we publish a new TZDB release well before March, when the main Paraguay change occurs. We can include in that release any other changes that come down the pike soon in the Philippines or Ukraine or whatever.
Please take into account that in some applications timezone rules are used well before the timezone rule change date. For example, I am writing from the flight metasearch website Trabber.com and we use timezones to calculate flight durations. So currently all flights to/from Paraguay from April 2025 onwards are displayed with a wrong duration because our TZDB is not updated yet. Is there an estimated date when this change will be published? Is there a way to get the current, most up to date version of the TZDB from your website? We are using this one: https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz but it does not contain Paraguay timezone change. Thanks a lot for your help.