The Classic, which was previously called the Q20, will include a QWERTY keyboard just like the Q10 released in 2013. It will also have a trackpad and navigation keys like 'Menu' and 'Back' at the top of the keyboard, a return to previous BlackBerry features.
The Classic will also include a 3.5-inch touchscreen, which the company says is the largest it has created for a keyboard phone. BlackBerry says it will be released by the end of the year, though it hasn't specified a date.
The device is the second from the Waterloo, Ont- based company in the latter half of 2014 - the Passport was launched at the end of September.
Chen's letter emphasizes BlackBerry's focus on core features and business users.
"You don’t reinvent yourself every day; you take what you learned yesterday and sharpen it today," Chen wrote. "We are committed to earning your business – or earning it back, if that’s the case. In the weeks ahead, BlackBerry will be sharing more details about Classic that we think you’ll like."