1. Yes, this refers to the periodic 25% off coupon that has been available in the armory for some time. This is just a visual reminder of that being available.
2. As per the article:
If you play a battle, you will be able to redistribute points, however since respecialization is not mentioned, I would say this is unlikely.
I'm verifying this with Content at the moment to confirm the intention of this passage and to have the wording improved *if* required.