Polylang 1.8.1 is a maintenance release. The main goal is to fix a regression introduced in version 1.8 concerning secondary queries with translatable post types and non translatable taxonomies. It also fixes a few other minor bugs that I noticed while testing during the last week.
Facebook and WordPress introduced a lot of new locales during the past year. I updated accordingly the mapping between these locales used for Opengraph support when Polylang is used in conjunction with Yoast SEO or Jetpack.
Three new translations have been moved to languages packs (ca, de_DE and pt_BR). And a brand new translation was created (es_CL). Today, already 16 languages packs are available for Polylang. 27 older translations are still supplied with the plugin. Thanks a lot to the translators and translation editors for their work.