I have the voda S10e and already have the new 10 update installed, unsure if mine is unlocked or carrier locked though! Haven't noticed a large amount of difference, folders are different when you open them and that's about it. Think my battery life has gotten worse though unfortunately...
S10e battery life for me has been okay. I charge it every night and have never fully run out.. I know a few on here have had nothing but problems with the batteries though unfortunately, seems to be a minority but definitely a luck of the draw!