Microsoft's plans look valid and fine, a great decision because unlike Siri and Google Now, Cortana only had its control over little part of the world's mobile devices. It was only limited to Microsoft's devices and couldn't catch up with its rivals. So allowing other users to get access to Cortana can be a big step for the company to extend its AI ecosystem, giving rise to many other new AI like features.
The 'Einstein' Project
A part of Microsoft is working on its new Artificial Intelligence (AI) systems, though we're not told what exactly but it has been dubbed as Project 'Einstein' and it's going to be combined with Cortana, allowing it to read your emails, understand them and notify you while considering the external factors like weather conditions, traffic etc. (if it's able to understand that the email is an appointment letter). It all sounds pretty interesting and can be get great break-through.
This kind of technology, which can read and understand email, will play a central role in the next roll out of Cortana, which we are working now for the fall time frame - Eric Horvitz, Managing Director (Microsoft Research)
The words look promising enough. For now, Microsoft is also working in enhancing their machine learning, speech recognition and 'bing' search which they are likely to include in their next Cortana Update and if things go as said and planned by them, Cortana will be a terrific AI bot, 'personal assistant' as some may like to it call as. All we can do is just hope and wait.