Well, it seems the "plus" naming convention is here to stay, folks. Oppo recently debuted its R7 Plus in China, and now it's Sony's turn. The company has just announced the Xperia Z3+, the international release of the Xperia Z4, its name in the Japanese market. While it may not look much different from last year's Z3, there is more than enough in this update to qualify it for this year's flagship. It's currently scheduled for release sometime this summer, however Sony hasn't confirmed final pricing yet.