Given the very thin bezels, the handset will most likely be smaller than other devices with the same screen size.
http://www.notebookcheck.net/Xperia-C5-Ultra-to-feature-bezel-less-display.147154.0.html
I quite like this phone... I actually like it a lot, but it being Sony, it will have a far too high price to deal with the concurring Chinese phones...
I hope this will cost 250 euros. It would be good for that price. :)