The enhancements in Windows Phone 8.1 include the following key features:
Cortana digital assistant
Cortana is represented by an animated circle
Thankfully, Microsoft's personal digital assistant will be integrated with core OS applications, such as phone, messaging, calendar, email, alarms, etc. This means that not only will Cortana be aware of your contacts, appointments, messages and more, but it will also be able to do some useful work for you, such as initiating a call, setting up an appointment or alarm, or reading your latest email - you just need to ask us using natural language. However, Microsoft has gone the extra mile, adding some more advanced capabilities to its digital assistant. For example, the user can ask Cortana to remind them about something the next time that they are talking with a certain person! This way, the next time you're having a call, or a chat stream with that person, Cortana will tactfully remind you about whatever it is that you wanted to share with that contact. Sounds neat, right? What's more, Cortana has been designed so that it can be integrated with third-party apps and services, such as Skype, Hulu Plus, or Facebook.
Cortana is shaping up as a remarkably smart and helpful digital assistant.
Even more live tiles
It turns out that Microsoft's three-column homescreen layout that debuted on Nokia's WP phablets has been kind of successful, so the company has wisely decided to bring this feature to Windows Phones of all sizes. With Windows Phone 8.1, you'll be able to have that three-column live tile view even with smaller devices. Hooray!
Homescreen backgrounds in WP 8.1
New lockscreen designs
Previously, some apps were able to alter the look of your WP lockscreen by adding some kind of additional info or images, but with WP 8.1, Microsoft is opening things even further, allowing developers to produce lockscreen designs that are completely different in their visual presentation or content format. This is yet another neat new feature by Microsoft that's designed to enhance Windows Phone's customization functionality, and quite frankly, we welcome that. In contrast to wallpapers, which seem to look a bit weird (or at least quite different from what we're used to) on Windows Phone 8.1, the unique lockscreen designs that Microsoft demonstrated looked very cool, and we can definitely see this feature getting very popular among WP users.
Windows Phone 8.1's Action Center
Internet Explorer 11
With Windows Phone 8.1, Microsoft is once again updating the wonderful Internet Explorer browser that comes with its mobile platform. Internet Explorer 11 brings some new and notable features, such as InPrivate browsing (browsing the web without leaving any data about you..... YES!), tab synchronization between the user's Windows devices, file uploading capabilities, WebGL and normal mapping support, as well as a new YouTube HTML5 player. And yes, you will be able to have more than six tabs open at the same time.
Internet Explorer will no longer limit you to just six tabs.
The above-mentioned things are some of Windows Phone 8.1's key features, but besides these, Microsoft has also added a number of smaller improvements to the OS. Some of the most notable ones include an enhanced application store, a week view for the calendar, Swype-like input method for the built-in QWERTY keyboard, an easy way to transition from a voice call to a video call, and a new Wi-Fi tool called Sense. The latter is designed to carry out a host of Wi-Fi-related purposes, such as new Wi-Fi network suggestions, automatic connection to free networks, or providing a secure way for your guests to connect to your home Wi-Fi network.
Windows Phone 8.1 release date
Microsoft hasn't avoided the availability question, which we're very thankful for, even if the information provided by the software giant is quite vague. So, here it goes: users of popular Windows Phone 8 models should expect an update to Windows Phone 8.1 sometime during the next few months, without any specifics being mentioned. And while the "next few months" time-frame doesn't really sound so encouraging, Microsoft is at least promising that brand new models featuring Windows Phone 8.1 will start hitting store shelves in April or May.