Sony hasn't stopped manufacturing the PlayStation 4 - The Verge

According to Bloomberg, Sony planned to end production of the PlayStation 4 in 2021, but due to PS5 shortages, the company will make about 1 million more of them this year. The only store we could find that still sells new PS4s is Sony’s direct sales website.

Nintendo 3DS, 2011-2020: Its strange life, quiet death, and the potential end of a mobile gaming dynasty – GeekWire

Sony Reportedly Planned to Cease PS4 Production at the End of 2021

Sony's new PS4 Pro quietly fixes its noise problems - The Verge

God of War - Playstation 4 : Sony Interactive Entertai: Video Games

Sony PlayStation TV review: a PS Vita on your television - The Verge

Sony: PlayStation 4 Nearing 'Final Phase' of Life Cycle

PS5 will be missing this important feature at launch

Here's how PlayStation 4 sales stack up to the best-selling game consoles ever

Sony tops 38.4 million in PS5 sales with a record-breaking fiscal year : r/gadgets