WordPress 4.1 is planned to be released in two days. Some users are worrying that changes in the way WordPress will manage taxonomies (mainly to avoid shared terms between taxonomies) may affect Polylang. So far and although I did not add any specific code to Polylang, all my tests passed successfully with the WordPress development version.
Nevertheless, I went on improving the stability of Polylang and this new version comes with several bugfixes.
Among these, I reworked a function of the WPML compatibility mode as it was not close enough to the original function. This should improve the compatibility with themes and plugins using the WPML API (especially the theme Avada).