• Decoupled test execution and reporting from PHPUnit
• Custom reporters implementing TestListener are no longer supported and must be converted to Extensions
• Tests of all formats are reported as useless if they perform no assertions and reports_useless_tests setting is enabled
• Added path_coverage setting to enable path and branch coverage #6158 by @s0lus
• Added optional value to fail-fast option (#6275) by @Verest
• Removed JSON and TAP loggers
• Removed code coverage blacklist functionality
• Removed deprecated class aliases
  • Codeception\TestCase\Test
  • Codeception\Platform\Group
  • Codeception\Platform\Group
  • Codeception\TestCase
• Removed settings disallow_test_output, log_incomplete_skipped and report_useless_tests
• Introduced strict types in the code base by @TavoNiievez
• Compatible with PHPUnit 10 only
• Compatible with Symfony 4.4 - 6.0
• Requires PHP 8.0 or higher