Sony's gigantic Xperia Z4 Tablet Ultra to launch in early 2015?

When we first caught wind of the rumored Sony Xperia Z4 Tablet Ultra in mid December, we deemed it "unbelievable in all senses of the word," and yet here's another rumor that corroborates past claims.Sony is planning to release the large tablet in the first half of 2015, reports DigiTimes.The site doesn't name the Xperia Z4 Ultra specifically, but the specs it lists for this rumored slate - a 12.9-inch 3840 x 2400, 8-megapixel camera, Qualcomm chip, and 8.6mm thickness - match the Z4 T