Unable to boot PiCroft

[pcwii]

Senna,
I don’t think the 3B+ is “officially” supported but I think others had success.
Try here for some more information, Good Luck!

Raspberry Pi 3 Model B+ Compatibility?

I’m sure most people here noticed that a new Raspberry Pi model was announced yesterday. It appears that the changes are pretty minor architecturally, though there are noticeable upgrades to the processor speed and wireless networking. Is Picroft compatible with the new hardware, and if I bought one and exchanged the Pi inside of my Mark I with one of these boards, would there be any upside/downside?