EMQ X 4.1.3 is released now, it mainly includes the following changes:

emqx-management

Bug fixes:

• Add type checking for the payload field in PUBLISH API

  Github PR: emqx/emqx-management#250

emqx-retainer

Bug fixes:

• Fix the issue that the retained message will not be sent when the subscription topic contains both '+' and '#'

  Github PR: emqx/emqx-retainer#146