I think it was till the end of this month, idf i recall correctly. But they did ay they would eventually throttle not sure if they did before. But i reckon if they increase the speed limit they know they 128kbs was a joke in the first place.
Still quite a low limit for uncapped it should be Up'ed way more like 25 gigs seeing as emails/browsing/updating uses way more cap these days and won't be helpful also to business wanting to use wireless instead of landline for certain reasons.