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title: Pebble SDK 3.4 - Changelog
date: 2015-09-09
--- 

### Changes to Firmware

* Improved calendar and reminder pin display.
* Added support for internationalization and localization.
* Added standby mode (disables bluetooth when the watch is not being worn).
  * This can be toggled in Settings > System > Stand-by Mode.
* Renamed "Do Not Disturb" to "Quiet Time" and expanded functionality.
  * Can now disable notifications during calendar events.
  * Holding back from a watchface will now toggle Quiet Time.
  * Quiet Time can be enabled from notifications.
* Increased timeline paragraph length limit.

### Changes to SDK

* Enabled [timeline HTTP actions](/guides/pebble-timeline/pin-structure/) (requires iOS app 3.2 or Android app 3.4).
* Added [Smartstrap APIs](/guides/smartstraps/).


### Changes to Pebble Tool

* Added the [`pebble emu-control` command](/guides/tools-and-resources/pebble-tool/),
  which enables sending real-time accelerometer and compass data from phones
  to the pebble emulator.

### Changes to Emulator/Phonesim

None.