Sony Xperia Z3+ leak: Could it be the international Xperia Z4 release?

Sony loyalists could be in luck; the Japanese company might be working on an international version of the Xperia Z4.
The company disappointed many when it launched the Sony Xperia Z4 earlier this month in an exclusive Japan-only release.
Sony gave no word on if or when we’d see the handset outside of its home nation, but a new report suggests we may soon see the device.
The White Paper pdf for the Style Cover Window on Sony’s website is listed as compatible with the Xperia Z4 and the Xperia Z3+, as first spotted by juggly.cn.
We’ve not heard of the Xperia Z3+ before, but it could very well be the first sign of an international launch for the Xperia Z4 handset. While the name implies the Z3+ will merely be a souped-up version of the Xperia Z3, the Xperia Z4 wasn’t a huge change from the Z3, so it wouldn’t be too much of a shocker if it was actually the international release model.
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Whatever the case, this information came from an official Sony document, so we know that this mystery handset actually exists.
The Sony Xperia Z4 has a 5.2-inch 1080p display, an octa-core Snapdragon 810 chip with Adreno 430 graphics, 3GB of RAM, 32/64GB storage options and a 2,930mAh battery.
In terms of design, it looks almost exactly like the Xperia Z3; we’d wager the Xperia Z3+ will follow suit.