The Raspberry Pi 5 comes with some layout and power requirement changes. For those upgrading an existing project to the Raspberry Pi 5, this kit includes the parts that you'll need to update. The 5 is a lot more power hungry, so included is the new 27W Type-C PD Wall Adapter (North American Plug). In more than just a new configuration; the new official case also includes a fan, a previously sold-separately component. The new case also features the ability to mount HATs to the Pi 5 while keeping it protected.
All the software can be downloaded from https://www.raspberrypi.org/ for Windows, Mac or Linux.