Based on a branch of the Android Open Source Project code-named “cupcake,” version 1.5 aims to smooth many of the rough edges in Android’s inaugural release. The update not only polishes existing functionality, but also adds a number of new features, including major additions like support for stereo Bluetooth using the A2DP profile, an on-screen software keyboard, and video recording and playback.
The Android 1.5 update clearly positions the platform as a solid competitor to Apple's iPhone. Though some of the new features—video playback and an on-screen keyboard, for example—are capabilities the iPhone has sported since launch, others, such as stereo Bluetooth, are due to arrive on Apple's platform in the forthcoming iPhone 3.0 update. But some, such as video recording and the ability for users to add third-party keyboards, are capabilities that Apple has made no mention of adding to its device.
In addition to beefing up what Android can do, it appears that Google has spent some time correcting many of Android 1.0's niggling deficiencies. For example, Android now supports rotating the screen into landscape mode using an accelerometer (the G1 only flipped its screen into landscape when you slid the screen out to reveal the device’s physical keyboard). Google also says it has added a layer of polish to many of the included applications and has fixed some performance issues, such as the atrociously slow camera load-time and slow scrolling in the Web browser. There are also under-the-hood improvements, like the latest versions of WebKit and JavaScript engine Squirrelfish, and an updated Linux kernel at the heart of the OS.
Google warns that the SDK is not yet finalized and that APIs could still be subject to change, so developers shouldn’t release applications for distribution on 1.5 as of yet; the company says that the final release of the Android 1.5 SDK is due out at the end of the month, but it’s unknown when the software update will reach consumers.
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