Just a quick update on the Sony Xperia X Performance in the UK - a second retailer has it in stock and it's a bit cheaper. Clove UK is asking £550 (with VAT) for it, down from the initial £600 price.
Hit the source link to check out the store. Again, only the Graphite Black model is available. White, Lime Gold and Rose Gold units are nowhere to be seen.
Certainly not on the Sony Mobile UK site, which isn't selling it yet. The Xperia X Performance has cropped up on Amazon, but it's either on pre-order or the seller ships from outside the UK.