Sony Xperia XZ2 and XZ2 Compact hit the store shelves in Europe31
In any case, if you haven't placed a pre-order due to various reasons, you might be pleased to know Sony has already starting to sell the Xperia XZ2 and XZ2 Compact across Europe. In the UK, the former is available for purchase for £700, while the latter can be had for £530 outright.
It appears that the Deep Green version of the Xperia XZ2 isn't available for purchase yet in the UK, but the Black and Liquid Silver models are listed with more than 10 units in stock.
The Xperia XZ2 and XZ2 Compact were available for pre-order in the United States through B&H, but the retailer doesn't have the phones listed on its online store any longer.