So technically today was the E3 V5 workstation launch not the server launch. Very low support on recent E3 launches which is why there is not much press on it. If you look to big sites, very few even covered the launch.
Here's the deal - if you are getting Xeon v. i7 for a workstation for ECC, good chance you are using a Quadro or FirePro for application support anyway.
In microservers, there is some argument that you could use this for GPU transcode/ VDI, but not really ideal.
Pretty much the E3 line is getting gobbled (save the new more mobile like SKUs) by the E5-1600 at the high end (more cores, memory, PCIe and good clocks), and Broadwell-DE at the low-end.
Broadwell-DE Xeon D-1520 is 4C/ 8T 2.2-2.6GHz comes in at a similar price to a 4C/ 4T 3.0GHz-3.5GHz E3-1220 V5 system. You lose single threaded performance, but get some multi-threaded back from HT on the Xeon D. You also get a much lower TDP, more memory capacity (RDIMMs not UDIMMs) and dual 10Gb NICs without having to even add a PCIe card. There are also more PCIe lanes on the Xeon D and no need for a separate PCH which the Xeon E3 still needs.
My sense is that E3 has seen a reduction in prominence in the Intel lineup hence why others have pinged me asking about when and what was launched today.