Can you actually legally listen to this new release anywhere? - if Radiohead wanted to create a new distribution ethos, then you would be able to perhaps listen to the material one-off, and then if you liked it, purchase it at the price you felt it was worth.
I personally don't think any progressive commercial selling structure works for a media that is as emotionally charged as music - its not like buying any other consumable good when it is a personal - reputation and fan base will still dictate whether you will get any sales to begin with, and when the fanbase was initally funded by fixed price/distribution selling, it seems a bit hypocritical you now jump ship and try and sell though a more ethical framework without acknowledging the past.
Or something.....