The Oculus Rift is suffering from production delays due to a glitch in the manufacturing process.
The needs of the few outweighed the needs of the many
The people behind Vulkan, the new generation, open standard API for high-efficiency access to graphics and compute on modern GPUs, have admitted that they are having a few problems.
Need time to reach full potential
The iOS title will not arrive till next year
Rumors suggest that it may be so
New code necessary in order to support the chip
Not ready until next year