According to the tech site Android and Me, Google may soon launch a new, voice assistant for Android devices that can respond to natural language commands. It could launch as early as January or February.
If true, it would be an upgrade to Android's current Voice Actions app, which for me does not work very well, and I rarely use. Voice Actions relies on pre-set voice commands in contrast to Siri, which lets you converse more naturally.
Details are still sparse at this point. Google is not commenting publicly yet.