You shouldn't have to re-wire for VDSL, it's the same old copper wires from the street into your home and they make a change to your port at the switch (that's the cabinet out on the road somewhere nearby) .. then bingo, your speeds ramp up, a lot.
Anyway that won't bother you if you're happy to have shifted to wireless broadband. In my case I have a household who have umpteen devices connected at all times and they are simultaneously and constantly smashing the internet, so we like wired VDSL which is the only high speed option in Paradise, where I live.