I think you mean 'models based on Ive Bridge micro-architecture'. They aren't releasing Haswell server parts until next year at the earliest.
Last time Intel Corp. updated its mainstream Xeon family of chips, it managed to roll-out new Xeon E3 and Xeon E5 microprocessors within a three months’ timeframe. With the new generation of Xeon E3 and E5 microprocessors, Intel will take a more gradual approach spanning from late May, 2013, and ending in Q1 2014, according to a media report.
The Xeon E3 family of central processing units for uniprocessor servers is set to be updated with models bases on Haswell micro-architecture in late May or early June, around the same time when Intel rolls-out its client chips powered by the same micro-architecture. CPU World web-site reports that the chipmaker intends to unveil 13 different Xeon E3 1200 v3-series models with and without integrated graphics. The new CPUs will come with up to four cores with Hyper-Threading technology and will utilize LGA1150 sockets.
The first Xeon E5-2600 v2 “Ivy Bridge-EP” chips will arrive in Q3 2013 for dual-socket LGA2011 server platforms, whereas the Xeon E5-4600 v2 “Ivy Bridge-EP” for quad-socket LGA2011 platforms will become available in Q1 2014. Besides, in the first quarter of 2014, Intel reportedly plans to launch E5-2400 v2 "Ivy Bridge-EN" microprocessors for low-cost LGA1356 platforms.
The world’s largest maker of microprocessors intends to roll-out a new mission-critical expandable Xeon E7 “Ivy Bridge-EX” platform in Q4 2014. It is expected that the new enterprise-class chips will feature 15 or more cores.
Intel did not comment on the news-story.