I inferred it might have been an internal discussion since I also didn't see Elon's tweet about it. I contemplated on posting it here and thought perhaps its a heads up notice. Regardless there is visibility for the topic on Twitter. When there is enough buzz about it from others first, then when Elon confirms it adds a boost. My 2 cents.

Plus, sharing it here gives an opportunity for GAW members to contribute to that thread on Twitter with our insights on what we know.

I inferred it might have been an internal discussion since I also didn't see Elon's tweet about it. I contemplated on posting it here and thought perhaps its a heads up notice. Regardless there is visibility for the topic on Twitter. When there is enough buzz about it from others first, then when Elon confirms it adds a boost. My 2 cents.