A forum member of Crackberry has posted an image of a supposedly upcoming device called Z15. The device is a BlackBerry slider- the same form factor as the BlackBerry Torch 9800 released by BlackBerry a few years back.
The Slider allows you to have a full hardware keyboard along with a large screen making it ideal for people who don’t want to compromise on the screen size or the hardware keyboard. I used the BlackBerry Torch myself for a few months as well and liked it so looking forward to the Z15. The picture above looks like a Photoshop but one can dream. If this is real, the poster says to expect it towards the end of the year.