Here's some very slick news in the field of digital assistants (aka budding AI overlords). Microsoft announced they are planning to offer a stand alone Cortana app and will make it available for both Android and iOS. On top of that, Microsoft is working toward taking Cortana to the next level by improving her functions with their artificial intelligence research project called "Einstein."
The reason they call the project "Einstein" is because of the way Cortana is meant to work more proactively using your relative position and what time it is. Here's a quote with a few more details,
Here at HQ we have to applaud Microsoft for this move. By becoming platform agnostic, they are making themselves useful and available everywhere, which will build brand recognition and loyalty. It's actually quite brilliant.
According to the report, the Cortana app for Android and iOS should be available in the fall of this year when Microsoft launches Windows 10 officially.