Sony has announced a variant of the Xperia E4 called the Xperia E4g (E2003, E2006, E2053), which will include 4G LTE support. The Xperia E4g has a smaller 4.7-inch qHD display, versus the 5-inch qHD display on the Xperia E4. The Xperia E4g is therefore a smaller handset, but marginally thicker at 10.8mm (Xperia E4: 10.5mm).
Other small changes include the addition of NFC and a higher processor clock speed of 1.5GHz quad-core (versus 1.3GHz on the original). The new handset will be available in both single SIM and dual SIM (Xperia E4g Dual (E2033, E2043)) variants. It is due to launch in April 2015 for €129 and will be available in black and white colours.
Via Sony Mobile Blog.