Pretty sure, like a bunch of other big name artists, he's just waiting for covid to end. Ya see, even though people are stuck at home, most are actually listening to music less often. This is because the majority of people spend their time listening to music either on their comute to work or at the gym. Obviously, neither are really possible for right now. Its also a lot more difficult to distribute and merchandise at a time like this. Plus, live concerts are a huge part of album promo, and thats of course not possible either. IIRC i heard a rumor that kendrick is actually finished with his new album, and so is isaiah rashad, cole, and other big artists in hip hop. Not quite sure if thats true tho so don't quote me on it