We actually have a pretty good idea about a lot of the specs, at least for the current pre-production model:
• QWERTY physical keyboard with capacitive touch enabled scrolling and type by swiping.
• Qualcomm 8953 (Snapdragon 625) SoC
• Android 7.0 Nougat
• 4.5 or 4.6 inch, 1620 x 1080 (3:2), 420 ppi screen
• Spacebar fingerprint sensor
• 3GB RAM, 32GB internal storage
• 18MP auto-focus rear camera (optional manual mode), 8MP front camera
• 3400mAh Li-ion battery
• USB Type-C Port, 3.5 mm headphone jack, Bluetooth 4.2
• Combined SIM and Micro SD Card Tray
• Capacitive touch screen navigation buttons
• Customizable Convenience Key
• Assignable keyboard shortcuts
• Top mounted 3.5 mm headphone jack
• BlackBerry Software Suite (Launcher, Keyboard, Hub, Contacts, Calendar, Password Keeper, Notes, Tasks, Device Search, DTEK Security)
• BlackBerry Hardware Root of Trust, Hardened Linux Kernel, Secure Boot Process.
• Optional FIPS 140-2 Compliant Full Disk Encryption
• Ongoing Security Patching
• Aluminum frame, soft-touch textured back
• Size: Approximately 5.9 x 2.8 x 0.37 inches (150 x 71 x 9.4 mm), about the same width as the Classic, in between the height of the DTEK50 and the DETK60, and about the same thickness as the PRIV.
• February-March 2017 launch date
• Manufacturing, distributing, and sales by TCL