ASRockRack haven't updated their website with the new boards yet but they've posted a PDF called "
2015 Catalogue" that lists the new boards starting on page 23. D1540D4U-2O looks like it's be the mATX SFP+ one to look out for, unfortunately no sign of any from the D1540D4I range coming with SFP+ ports... copper only.
The D-15x0 models are on pages 33-34 (S-28-S29), seeing 6 models listed.
Mini-ITX (4x USB3.0
D1520D4I - base model
D1540D4I - D1540 variant of the base model
D1540-D4I-2T - D1540 + dual Intel X557-AT2 (Dual 10GB Base-T)
Micro-ATX (minus one USB3.0 internal header and add one PCIe 3.0 x8 slot when compared to the mini-itx)
D1540D4U-2L - base model
D1540D4U-2T8R - Intel X540 (dual 10GB Base-T), LSI 3008 controller (2x mini SAS!) (
linkage)(
Linkage #2)(
Linkage #3)(
Linkage #4)
D1540D4U-2O - Intel CS4227 (dual 10GB SFP+)
So if you want SFP+, there's only one model available. Will be interesting to see what price points they have with these when they are available.
IMO AsRock should have been shipping the D1540 boards by now, all of the components have been available for months unless SuperMicro paid $$$ to have a first to market exclusivity deal.