Since last Friday language packs for themes and plugins are no longer generated every 6-12 hours. Language packs are now build 30 minutes after a change to a translation or an import for new translations has happened.
This means that when you update a theme or a plugin in the future it’s likely that WordPress will also download an up to date language pack. Or, ever had a critical typo in a translation? Just fix it and watch how fast your users will get the updated translation. 🚀
Because we all ❤️ Slack: Each build process is logged in the #meta-language-packs channel:
Expect similar changes to language packs for WordPress core soon.