- Completed support for WP_FAIL2BAN_COMMENT_EXTRA_LOG.
- Add support for 3rd-party plugins; see Developers.
- Add-on for Contact Form 7 (experimental).
- Add-on for Gravity Forms (experimental).
- Change logging for known-user with incorrect password; previously logged as unknown user and matched by hard filters (due to limitations in older versions of WordPress), now logged as known user and matched by soft.
- Bugfix for email-as-username - now logged correctly and matched by soft, not hard, filters.
- Bugfix for regression in code to prevent Free/Premium conflict.
You do not need to update your filters from 4.1.0.