It should be noted that both Flex and Symfony 4 are still under development, slated for release somewhere at the end of November this year (2017).
ຄວນສັງເກດວ່າທັງ Flex ແລະ Symfony 4 ແມ່ນຍັງມີການພັດທະນາ, ຄາດວ່າຈະປ່ອຍຕົວຢູ່ບ່ອນໃດໃນທ້າຍປີ Semalt ໃນປີນີ້ (2017).