Sony Xperia's latest update, which has the build number 1.1.A.0.1, has not indicated what kind of changes it does contain. There are also no noticeable improvements that came along with the update, wherein some users mentioned that their batteries have been draining fast after installing the update. 

Sony has not released any information that would explain the content of the update, which weighs 1.3 MB. The update says that once it is installed, users can get the latest features and improved performance out of their Xperia devices; however, this description is not even helpful at all, since what has been added or deleted is not yet known as of this time.

It is not yet also known which among the many Xperia devices have received this update; however, few users have claimed that they have experienced updating their Xperia Z2, Z2 Tablet, Z3 Compact, Z3 Plus, Z5, Z5 Compact, and X Performance smartphones.

One user on the Xperia Blog, which goes by the username MikeU, believed that the update is related to memory. He said that when users go to the Apps Settings, the version 1.1.A.0.1 could be seen underneath the Memory option, although he has not seen any direct effect of the update on his memory usage. Another user named Vitali has supported this claim and said that when the updates on the Memory were uninstalled, the Maintenance update showed up again.

Meanwhile, JohnnyRedHot on Reddit posted about his experience on this update, which led to a heavy battery drain on his Xperia Z3C after installing it. It is said that he only used the device for Google Drive and for taking a couple of pictures. Furthermore, before the update, his Spotify app can run for six hours, but now, the standby mode of the device only lasted for six hours.

We are hoping that Sony will release any statement about this update as soon as possible.