Alcatel Lucent seem to be of the opinion vectoring will enable 110-120Mbps to be achievable up to around 300 metres or so, and
ThinkBroadband says that's about one third of all lines, which isn't all that terrible, that's potentially 5 million people or almost the entirety of VM's broadband customer base. And that's without taking into account any possible increase or rebalancing of spectrum.
And the last Samknows report showed 100% of customers on 38Mb and 73% of customers on 76Mb were already in the highest group of line speeds for their class of service anyway. Personally every property I've lived at has had attainable FTTC rates of 110Mb or more.