Sony is confused regarding the Android version of Xperia E4, mentions both Lollipop and KitKat
One thing that's not clear about the Xperia E4 is the Android version that it's going to have at launch. According to a post from Sony Developer World, the handset runs Android 4.4.4 KitKat (that's what we had previously reported, too). However, the Xperia E4 product page says Android 5.0 Lollipop is on board. Obviously, we're hoping that the smartphone will run Lollipop. We'll find out if that's the case later this month, when the E4 is supposed to be released in select markets.
Besides a 5-inch screen and a MediaTek processor, the Sony Xperia E4 features a 5 MP rear camera, 2 MP front-facing camera, 1 GB of RAM, 8 GB of expandable storage space, and a 2300 mAh battery (this should be able to provide up to two days of normal usage).
Update: Sony edited the E4 product page, which now says the handset runs Android 4.4.4 KitKat.
sources: Xperia E4 product page, Sony Developer World