The Australian edition of Shadowfell, from Pan Macmillan, is officially released July 3. It should be available in all good bookstores. Australian and New Zealand readers should also be able to purchase this edition (or the e-book) online. I've seen a couple of great reviews already.
For an edition in English, European readers will need to order the US edition (coming out in September.) There are Dutch and Portuguese editions to come, but I don't have dates for those. Translators are currently working on both.