Yes, you read that right. V4.2.20 is now released with support for PHP 7.0 and updates to the Symfony components to v2.7.
Even though the version four line of Laravel is deprecated, a lot of people are still using it and haven’t upgraded to the latest. This release allows them to move to PHP 7.0 and take advantage of it’s speed improvements as well as security fixes without having to upgrade their apps.
Ideally, those on v4 have plans to upgrade to v5 but the Laravel team understands that not every business has the luxury of being on the latest and greatest at all times and made an exception to their typical policy of no new features on old versions.