Well - there is nothing in the specs to suggest so. Otherwise, it would be quite an amazing little motherboard. On the other hand, considering the actual target market, I'm not sure many people who use Arduinos would need the SATA - and it might add significantly to the costs. Personally I would have preferred to have no HDMI, but to have SATA instead!
It is a real shame the new Arduino Galileo
doesn't have SATA. Now, talk about a missed opportunity there! I know the intended target market is different, but if they would have added SATA, you would have had all of a sudden a tiny x86 board at 60USD with SATA. I can't think of anything to beat that on x86 at that price point.
Or at least they could have made the mini-PCIe slot mSATA compatible - so at least it could take SSD's.