The new ESPN channel launches on August 3rd according to a BBC News story. It also confirms that it will launch an HD version of the channel, which will carry the 46 Premiership games picked up after the demise of Setanta, plus some of the US sports the channel also has the rights to show.
Sky's residential customers will have to pay a premium of £9 a month for the new channel if they already pay for Sky Sports or £12 a month if they do not.
No confirmation on Virgin Media's carriage, although the latest channel list from Virgin shows that ESPN will appear as channel 553 and will be a "premium channel". No sign of the HD version in that listing btw - given Sky's close partnership with ESPN in all aspects of the channel's evolution, I would frankly be stunned if we get the HD version on cable.