I Created a Gemini API Key and Got AQ. Instead of AIza

I created a free Gemini API key in Google AI Studio. When I went to copy it, I stopped. It started with AQ.Ab. Not the AIza I had been looking at for as long as I can remember. My first thought was that something had gone wrong with my account. A leaked key, or a restriction, or some flag on the project. I looked into it, and it was none of that. Google is partway through changing how API keys are issued, and a freshly created key now comes out in the new format. Nothing broke. This is the plan...