Manufacturing wind-down begins early. http://www.bit-tech.net/news/hardware/2013/06/07/intel-haswell-boards/1
To be honest, that double-digit number is not that simple. Let's see what is there for Socket 1155 from Intel (i ignore the Sandy Bridge generation boards and H61, which is a lowend board with no use for Socket 1150 yet, as there are no Haswell Celerons/Pentiums/i3's): 1 B75 board 3 Q77 boards 3 H77 boards 1 Z75 board 5 Z77 boards What Socket 1150 boards we got ? 1 B85 1 Q87 2 H87 1 Z87 So it's 13 for Socket 1155, versus 5 for Socket 1150 for comparable boards. And while S1155 has 13 non-lowend board models available, all of those weren't released on day 1 either.
