This is a pretty big one, Z5 owners, so be ready for some welcome changes and improvements across the board! You can learn more about the changelog in the slideshow below. Thanks to /r/Android's trinitynox and PeanutButterChicken for the English translation!

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You can now set how long you want the phone to stay in vibrate (Ranges from 15 minutes to indefinitely).

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POBox Plus is the name of Sony's Japanese IME. Well known for being the best Japanese IME from any OEM.
POBoxPlus is added.

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New home for the rotate image option in the Album app, letting you choose which direction to rotate.