Three new permissions have been added to the translation_entity module. Now there is a different permission for creating, updating and deleting a translation. These, combined with the usual per-entity-type permissions, allow to set fine-grained access control for translators. For instance a role having only Translate comment and Create translations will only be able to create comment translations.
A user having translation permissions but not edit permissions for a given entity will see a stripped-down entity form where only translatable elements are shown.
Moreover, the permission_granularity entity key (see the related change notice), has been exploited to provide support for bundle-level permissions for entity types needing it.