Looks like we have a leak regarding Sony daily, now has leaked image showing the Xperia Z4 front as would be shown on sites and press releases.
As you can see, all previous rumors agree with the new image. This time shown the smartphone in black with changes in the front panel we expect, the two speakers now in the bank as in the case of Xperia Z2 and the front camera is now on the left side of the logo.
The button configuration has also been confirmed by phone covers that have been filtered and the interface is also known, as it is with that feature new devices based on Android 5.0 Lollipop and will soon be in the Xperia Z3 and devices above. The source questioned whether this new flagship would be released in May and given the amount of leakage, could prove to be true.