With BlackBerry Blend, users will be able to view much of the content (including messages) from their 'Berry handset to a larger screen like a tablet or a computer. Blend is expected to allow you to respond to some messages and chats from different accounts in BlackBerry Hub. You will be able to get to your BBM groups, chats and channels on a computer or tablet, and SMS messages can be read. You will also be able to view daily, weekly and monthly agendas while also being able to make changes to existing calendar entries. New entries to your calendar can also be made.
If your business is using BES10, you can open a browser with a secure connection to view your company's intranet. Lastly, tasks that you used to do with BlackBerry Desktop Software or BlackBerry Link, such as backing up and restoring device data, switching to another device, and copying content and media between a computer/tablet and your BlackBerry 10 device, can now all be done with BlackBerry Blend.
If this leak is legit, running Blend will require a mobile device running BlackBerry 10.3 or later. Computers need to be powered by Windows 7 or later, or by Mac OS X 10.7 or later. Android tablets must be running Android 4.4 or later while an Apple iPad must be powered by nothing less than iOS 6. You must be connected to a Wi-Fi or mobile network, or synced via a USB connection.
BlackBerry Blend just might be a very useful tool for the businessman on the move, as he gathers information on the fly using his Passport, and accesses it using his PC or tablet in the office. Interestingly, it doesn't seem that BlackBerry's own tablet, the BlackBerry PlayBook, is of much use here.
source: BBIN via Crackberry