Over a year ago, they said exactly the same. The new episodes will air in late summer/early autumn of 2002. And you know what we got. We got the old episodes in TEN MINUTE portions (!) in the Sone2 after-school program. Two days pr episode... that's about as tragic as it gets.
But then a new press release showed up: The new episodes were supposed to be aired every weekday at 18:00 from 2.December 2002 (which you may have noticed they didn't). I think that's about as specific as any TV network could ever get when it comes to replying to a question from a viewer, but they ditched it anyways in favor of Family Guy.
So I wouldn't automatically believe them when they say the new episodes will be aired this summer. And as a guy from Bergen, I've been down to their headquarters more than once to ask/complain about their treatment of Futurama
But at least "this summer" is better than "we have the rights for season 4 and 5, but haven't decided when to air them yet", as they have claimed ever since mid-December.