Release during the last week of August in the UK.
I've just been contacted about my upgrade by a very helpful and knowledgeable Vodafone UK rep, who this morning had a 'management meeting' about upcoming models. He says that there is no confirmation about Voda exclusivity yet, but they are 'working towards it' and tells me that release date on Voda is as of today confirmed as 'the last week in August'. He seemed to know what he was talking about, knew everything about the phone and was very sure of that (disappointing) timing... :(