Not so. Other ISPs have it for sale, but they’re not pushing it yet.
Does Infinity put fibre to your actual house then? Or just to the cabinet?
Fibre (carrying data; copper carries voice) from exchange to green cabinet in street. Copper carries data + voice to your house. You need a special (VDSL) modem, which can only be plugged into the master socket. Modem is powered, so it needs a socket nearby.
I had it (albeit via the ISP I work for) for free when it was being tested. Only the 40/20 product was available then. Wasn’t bad, but then I moved house and I have to tolerate the shit line BT deems to deliver from the exchange. Still get my phone, broadband, mobile and youview TV for free though… 😀
EDIT: given the amazing shitness of Openreach to actually think hard about how to get fibre to anywhere but densely populated urban areas, the sooner BT loses control of the last mile, the better.