https://techcrunch.com/2019/06/23/the-raspberry-pi-foundation-unveils-the-raspberry-pi-4/ > The Raspberry Pi 4 is here — and it’s an awesome upgrade. Earlier rumors said that it would take a while before a major Raspberry Pi upgrade, but it’s available starting today. > When it comes to physical design, the Raspberry Pi 4 Model B looks a lot like the Raspberry Pi 3 Model B+, the previous flagship model. It’s a single-board computer with a lot of connectors that is the size of a deck of cards.