Laravel v6.4.0 is released in 2019/10/23, here are the changes we`ve merged into this release.

Added

Added missing() method to Request class (#30320)

method to class (#30320) Added Pipeline::pipes() method (#30346)

method (#30346) Added TestResponse::assertCreated() method (#30368)

Changed

Added connection is no longer usable to DetectsLostConnections (#30362)

to (#30362) Implemented parse ID on find method for many to many relation (#30359)

Improvements on subqueries (#30307, 3f3b621)

Pass mail data to theme css in Markdown::render() method (#30376)

method (#30376) Handle ajax requests in RequirePassword middleware (#30390, 331c354)

Fixed

Fixed retry() with $times value less then 1 (#30356)

with value less then 1 (#30356) Fixed last_modified option in SetCacheHeader (#30335)

option in (#30335) Fixed the Filesystem manager's exception on unsupported driver (#30331, #30369)

Fixed shouldQueue() check for bound event listeners (#30378)

check for bound event listeners (#30378) Used exit code 1 when migration table not found (#30321)

when migration table not found (#30321) Alleviate breaking change introduced by password confirm feature (#30389)

Security:

Password Reset Security fix (23041e9, a934160)

GitHub: https://github.com/laravel/framework/releases/tag/v6.4.0