Few months back, it was leaked out that Sony may launch some of its new flagship devices. Among which Z1 compact has already announced and possibility of 'Sirius' and 'Canopus' to be announced really soon.
A mobile blog reported that Xperia Canopus made for KDDI au(a Japan's second largest mobile operator) which was just recently certified by Japan authorities, has Canopus with a model number PM-0750-BV. The KDDI's Canopus has a quad core Snapdragon 800 MSM-8974-AB processor with LTE, WiMax, Wi-Fi 802.11 a/b/g/n/ac. It'll probably be a 5 inched display phone and KDDI will launch it as a SOL25 which makes sense as Xperia Z1 was launched as SOL23.
Another Japanese blog has quoted the images of the above phone as Xperia Z2, but it might be their own perception.
It's now confirmed that the Sony is at its edge to announce its upcoming two devices namely Sirius and Canopus.MWC 2014 has almost arrived and we'll be waiting to hear from Sony for its larger display devices(almost 5.2 inches).