Well, a great flood of information is coming out over at the ESV Study Bible blog about this forthcoming release.
Looking on Amazon.co.uk, until very recently you could see the Crossway edition (ISBN 978‑1433502415) with no price listed and also, more recently, a superficially very similar Collins edition (ISBN 978-0007237142) at £39.99. They are still listing the Crossway editions in fancier bindings, e.g. the bonded leather one which is actually listed as a couple of pounds cheaper than the Collins hardback edition.
It would be useful to know exactly what the difference is between the Crossway and Collins editions. The page counts seem to be slightly different. Does the Collins one use the Anglicised ESV text? (Perhaps too much to hope.)