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title: Pebble SDK 3.8 - Changelog
date: 2015-12-15
---

### Changes to Firmware

* Added support for Pebble Classic and Pebble Steel watches!
  * You can read more [on our blog](/blog/2015/12/02/Bringing-the-Family-Back-Together/)
  * This is a major change! Please test your aplite apps thoroughly after rebuilding with
    SDK 3.8.
* Added Pebble Health!
  * No API is yet available to access health information, but one will be added in
    an upcoming release.
* Improved the rendering of ``NumberWindow``.
* Fixed a race when exiting an ``ActionMenuLevel``.
* Timeline pins no longer require icons, and will pick a sane default.
* Resolved an issue causing alarms to not vibrate in standby mode
* Added `shortSubtitle` property to all timeline layouts.
  * This string, if provided, will be used as the subtitle in the timeline list view.
* Added a `displayTime` enum to the timeline weather layout.
  * If `none`, it will not display a time. If `pin`, it will display the time of the
    pin in the title. The default is `pin`.
* Timeline pins were no longer last updated in 1970.
* Resolved a memory leak in ``DictationSession``.
* Restored the double vibration when _disabling_ Quiet Time (enabling is still a single vibration).
* Restored the missing "Call back" button to iOS missed call pins.
* Assorted minor design changes.

### Changes to SDK

* Deprecated `png`, `pbi` and `pbi8` in favor of a new `bitmap` resource type.
  [Read more on our blog!](/blog/2015/12/02/Bitmap-Resources/).
* Added `PBL_MICROPHONE` and `PBL_SMARTSTRAP` macros, which will be defined when a
  microphone or a smartstrap connector is available, respectively. Note that the
  runtime availability of the services should still be tested, as the presence of
  hardware is not sufficient.
* Font resources are now somewhat smaller than they used to be.


### Changes to Pebble Tool

SDK 3.8 is the first version exclusively available via the
[new pebble tool](/blog/2015/12/01/A-New-Pebble-Tool/).

No future SDK packages will contain the tool, or any changes to the tool.


### Changes to Emulator/Phonesim

As with the pebble tool, the emulator and phone simulator are no longer coupled to the SDK.