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title: Pebble SDK 4.0-rc20 - Changelog
date: 2016-08-29
---

This is a developer release candidate for SDK 4.0. No firmware is provided.

### Changes to Firmware

* Apps now correctly launch when installed in the SDK shell.
* Rocky bugfixes.
* Other bugfixes.

### Changes to SDK

* This SDK will not install in any pebble tool prior to 4.4-rc1.
* Corrected outdated AppGlance-related definitions in the aplite compatibility
  header.

### Known Issues

* Using system icons for appglances is currently broken. Using custom icons for
  them, however, works fine.
* `pebble gdb` is currently broken.