Plusnet Premium question

[#1]

People who are on Plusnet Premium right now, what happens after 12 months? Do they stay on Plusnet Premium with the 80gb monthly allowance for the duration they stay with Plusnet as their ISP with a price increase after the 12 months? Or do they get put onto Plusnet Extra automatically after 12 months (I wouldn't have thought so) but I don't know so hopefully someone can answer that.
Thank you.

[#2]

The old packages with the current prices will remain for any customers on them until they choose to switch.
I've been on BBYW2 for some time now as the last refresh made no financial sense to me.

[#3]

thats correct. PN dont force product changes. my PN line is still on the old unlimited package and there is many more on here that will be on mega old packages.