If you were hoping for some Xperia Z4 news during MWC, no doubt you were left pretty disappointed that the device did not make an appearance at all.
However, according to Sony's PR Chief Tim Harrisons, we aren't going to be waiting a full calendar year for the release of the Z4 so considering the Z3 was released last September we could well be looking at a release date this summer.
That date might be not too far away so it seems quite a strange decision that Sony did not want to bring the Z4 along to Barcelona. Expect another announcement over the next few weeks.