Two new Xperia devices have been uncovered, and they might already put the Xperia Z and ZL into retirement. Although, as noted by Xperia Blog, these devices are likely destined for Japan, possibly this summer, with no indication they'll make it over to the States. Be that as it may, the information provided are just rumors anyhow, so lets not write off Sony's current flagships just yet.
One of the devices, known as Xperia A (codenamed Dogo), will sport a 4.6-inch HD display (likely 720p, but XperiaBlog said it might be 1080p) and a Snapdragon 600 chipset. The device will also have 2GB of RAM, 32GB of internal storage, 2300mAh body, a water/dust resistant body, mobile wallet and an IR blaster.
The other handset, the Xperia UL (codenamed Gaga), will come equipped with a 5-inch 1080p display, Snapdragon 600 chipset, 2GB of RAM, 32GB of internal storage, a removable 2300mAh battery, and the same features as the Xperia A. In addition, Sony might also be working on a 6.4-inch handset (Togari) with 1080p display, but little else is known about the massive phablet.
None of this information has been verified, so they're big fat rumors for now. Sony's handsets will likely score big in Japan, but elsewhere? If they do make it overseas, they'll have to do battle with handsets such as the HTC One and Samsung Galaxy S4. So far, those two seem like the gold standard for this year.