Key Features:
Dreambox OS
Dreambox API
Dual-Core 12K DMIPS CPU
2 x HDMI 2.0 (In - Out)
3" Custom Color-LCD
Touch on/off
MPEG-2/H.264 Decoder (Full HD)
H.265 Decoder (Ultra HD)
1 x Smartcard Reader
1 x SD-Card Reader
2 x Common Interface Slot
2x Tuner-Slots
2 GB RAM
8 GB Flash
Gigabit-Ethernet
USB 3.0
Mini-USB-Service-Port (Flash Rescue)
S/PDIF-Uscita
Automatic Scan
2,5" HDD (optional) high 15 mm
WLAN (optional)
Web Interface per PC und Smartphone
DiSEqC 1.0, 1.1, 1.2, USALS, Unicable
As a tuner, there is now a huge selection of alternatives:

the standard DVBS2 Twin tuner,
the cable / terrestrial Twin tuner DVBC/T2 Twin,
the Sat cable terrestrial tuner DVBS2x TripleTuner and
the new FBC tuner (several tuners in one).
I have notice that few models are coming in shops next friday prices are depending by configuration described above and starting from 349€ up to 449 €

http://www.dreamboxupdate.com/opendreambox/2.5/experimental/images/dm900/