Phottix released the Mitros TTL for Canon earlier this year, and now the Phottix’s Mitros TTL Flash for Nikon should start shipping soon.
The Phottix Mitros TTL is built as a top-of-the-line competitor. Functions include built-in IR triggering with Master and Slave modes, AF assist light, auto/manual zooming flash head, all with fast recharge times. The Phottix Mitros TTL Flash includes a USB port for firmware upgrades, a 3.5mm sync port and optical slave mode.
The Mitros TTL for Nikon runs $299.99 and is available here at Adorama.