Why did we even buy Ryzen 3rd Gen if Zen 3 Ryzen 4000 series is out in 2020 already?

“Sources are claiming an increase of up to 50% in Zen 3’s Floating Point Units (FPU) compared to Zen 2,…

AMD Ryzen 4000 Rumored to Offer Around 17% Increased Performance

Source: [H]ardOCP – AMD Ryzen 4000 Rumored to Offer Around 17% Increased Performance