Google has already made some tweaks to Lollipop since its initial debut back in November, but the search giant is said to be planning major improvements and new features that are expected to arrive early next year. In addition to bringing back silent mode, Android 5.1 is to improve RAM management, fix sudden app closures, and enhance stability.

“Our source has informed us that Android 5.1 will be launched by the end of February 2015,” AndroidPIT reports, “and a second, completely separate source that is also privy to important information regarding Android updates, confirmed it.” One source has even provided a changelog for the update.

One of its most welcome additions is the return of silent mode, which was inexplicably removed from Android 5.0. This allows you to silence all alerts on your device and disable vibration, but still allows for alarms and timers. Lollipop’s new “None” alerts profile is somewhat similar, only that disables alarms, too — so it’s no good for nighttime use.

Other changes are expected to include:

• General improvements in system stability
• Improved RAM management
• Fixes for sudden app closures
• Improved battery management
• Excessive consumption of network devices when used Wi-Fi fixed
• Issues with wireless connections fixed
• Problems with Okay Google function solved
• Notifications problems solved
• Some sound problems experience by certain devices fixed
• Other improvements and changes

AndroidPIT is expecting Android 5.1 to bring more; this isn’t a final change log, so we can expect to see it alter and expand before the update actually arrives. That will reportedly happen in February, but if Google runs into any hiccups, we could be waiting longer.

• SourceAndroidPIT