In SONY Smartphones Lollipop update started, see full plan

sony as promised to roll roll out Lollipop Update in Q2 end . now they started rolling out update. z series Lineup getting update in India and other country
they are rolling Android 5.1 directly . their plan

Xperia Z, including Xperia Z, Xperia ZL, Xperia ZR, Xperia Tablet Z, Xperia Z1, Xperia Z1S, 

Xperia Z Ultra, Xperia Z1 Compact, Xperia Z2, Xperia Z2 Tablet, Xperia Z3, Xperia Z3v, Xperia Z3 Compact and 

Xperia Z3 Tablet in Q3 starting from July month only

Xperia M2, M2 Dual,  got KitKat now directly will update to 5.1 soon.

Xperia M2 Aqua, M2 Aqua Dual also in this list.