>>> Does it apply all to all packages
AFAIK its all packages going through that link - certainly Value & Premium - although if you get a phone and broadband package, then its only the adsl part thats free.
There is no mention of Pro in the promotion but since its also available from that page, then I dont see why not. I'll check.
>> and the no contract option
A 12 month term applies although this can be waived if you pay the £30 set up fee etc.
I think these are the T&Cs that relate to it which gives more info.
1. This offer gives you three months free broadband. This discount offer is applied to the initial fee (first month's subscription) which is due when you signup for a Plusnet broadband product and the subsequent two months' subscription.
2. This offer is available to customers signing up through plusnet 3 months free using the promo code.
3. The offer is only available to new customers who place their order online via - plusnet 3 months free
4. If you leave Plusnet in your first 12 months after receiving a free set-up, router or house move, we’ll charge you for these. If you remain with Plusnet for 12 months after receiving a free set-up, router or house move these charges will be waived. You can also choose to pay for any of these up front if you want more flexibility.
5. This offer cannot be used in conjunction with any other offer.
6. There is no cash alternative to this offer.
7. Plusnet reserves the right to remove the offer at any time including prior to the advertised end date without notice.
8. Once you have signed up for the offer you will be subject to the standard terms and conditions of service for both Plusnet broadband, and where applicable Home Phone products, which can be viewed at http://www.plus.net/info2/legal/
9. After you have received your three months' worth of credit you will be subject to the standard published monthly rental charges prices for the respective services which can be viewed at http://www.plus.net/info2/legal/