There's an advert for the i890 in today's Metro newspaper which describes it as "only on Orange" so I'm guessing they have an exclusive in the UK (for a short while at least)
The adverts doesn't list a price though (the advert does mention the Dolphin 40 tarrif but doesn't say if it will be free on that tarrif or not)
But the fact they are advertising it at all implies it's going to be in people's hands pretty soon...