It is available for you.

Sky introduced two Pro products some time back, rebranding the top Fibre product and making a new ADSL2+ based product in the process. Only the ADSL2+ based product is available now.

You don't need to be a TV subscriber but may need to call Sky to make the switch. There is an additional cost.

As I've already mentioned, if you are just after getting a better ping, then personally I would highly recommend that you switch to Fibre instead. My average ping is just below 10ms. Most of Sky's Fibre products are similar to this.