I'm also following this with interest. The product announcement gave zero details on price, installation/wiring details, that sort of thing, so a lot of blanks remain to be filled in. My brother is a roofing contractor and I'm an electronics engineer and former roofer. We're thinking it'd be a great niche to be the first installers of such a product in the area. Of course, if you're the first ones doing it, you're also often the product tester and general troubleshooter... :-)
I'm wondering if the tiles install on a rail that also provides the electrical connection, or connect to the adjacent tile, or.. ? Then there'd presumably be a limit on how many you could string together before needing to run the next feed back to the inverter/Powerwall/whatever they're connected to. Lots of details that are not currently part of a roof installation.