But iris gpus are already on the market?
Yes Haswell Iris is on the market since fall 2013. Broadwell Iris was "launched" yesterday, but won't be available before the end of Q1 apparently. This is what Anandtech says:
Intel is expecting OEM systems with Broadwell-U to start shipping in North America within the month. Designs with Iris graphics, or those featuring Intel based WiGig connectivity, will be more towards the end of Q1. Overall Intel is tracking hundreds of designs involving Broadwell, indicating that it will be a significant push to bring 14nm to the market.
http://anandtech.com/show/8814/intel-releases-broadwell-u-new-skus-up-to-48-eus-and-iris-6100/3