Google has just published the Android platform distribution up to June 1st,2015. Last month, Lollipop was trying very hard to reach 10% of all Android installs, and it finally did manage to get there.
What's more ? Android Lollipop is now powering 12.4% of devices worldwide, if we count both releases called that together. That said, KitKat is still the prevailing version among devices out there, reaching 39.2% of the market this time around. Interestingly, KitKat's share has been dropping steadily for a couple of months or so perhaps those Lollipop updates are starting to make themselves felt.
The three iterations of Android collectively called Jelly Bean are still (together) in second position, with 37.4% share right now, down from 39.2% a month ago. Then we have Ice Cream Sandwich with 5.1% (down by 0.2%), Gingerbread with 5.6% (down by 0.1%), and Froyo with 0.3% (which, surprisingly, is flat).