My mate who's a Liverpool has this to say:
Standing at the game is not illegal. It never has been, the clubs themselves banned it.
Liverpool from this season have officially/unofficially allocated 1892 seats at the back of the Kop as a safe standing area. In that fans that are there know the rules and will behave themselves and the stewards wont interfere when we stand.
Officially its a 'singing area' - i think they were warey about declaring it a standing area.
we have had loads of our allocations cut back this year (city, boro, toon) because of standing by our fans at last year's match....