Some users experienced a 404 error on categories archives due to a bug introduced in v1.4.1. This release should fix the issue.
With v1.4.x, a few users run out of memory when trying to create or edit a new post, while everything was OK with v1.3.x. This concerns websites having 10000+ untranslated posts and this is due to the list of untranslated posts which is now available in the Languages metabox. The current release comes with a quick fix which should hopefully improve the situation for the memory.
However I still have to work on a better solution to handle untranslated posts in such cases. This will come in a later (major) version.