---
# Copyright 2025 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

title: Pebble SDK 3.0 - Changelog
date: 2015-05-27
---

This is the first public release of SDK 3.0. It includes a number of small fixes to polish the timeline ui as well as improve stability. 

## Detailed List of Changes:

### Changes for Firmware:

* Added a crash dialogue when watchfaces crash. 

### Changes to SDK:

*No changes*

### Changes for SDK Tools:

- The emulator now supports WebSockets
- The emulator now persists JavaScript `localStorage` between emulator launches
- The emulator now caches app JavaScript between emulator launches
- The SDK no longer depends on cython to install correctly.

### Changes to Timeline:

* Fixed a bug where text would overlay in calendar reminders.

### Changes for Examples:

*No changes*

### Changes for Documentation:

* Fixed documentation for ``clock_to_timestamp`` to specify that it returns a timestamp in localtime on aplite.