Open your eyes: X10SDV-4C-TLN2F has two 10gb copper.Sadly no-one seems to be bringing out a D1520 with 2x10Gb (either copper or SFP+) which was my personal hopeful for a wonder-NAS board. Maybe in a year or two.
Xeon-D 1503, 1507, 1517, 1518, 1528, 1537 and 1548 are planned for later ?