They used to have a specific GPU model listed as the minimum requirement. They likely removed mentions of specific GPU’s since it’s been so long that those GPU’s aren’t widely available and they didn’t want to update to list a current GPU which might confuse people that older GPU’s won’t run it. But again, there are no integrated Intel GPU’s that are capable of running UE4 well, that hasn’t changed. The integrated GPU’s are designed for people who only need the minimum graphics processing power necessary-average computer users-not game developers.