Skylake is not delayed because of Broadwell. Intel is right on time with the next generation. The only thing that was heavily delayed is Broadwell. So there is something wrong with the information of your "source".
Broadwell just came out in Jan. Broadwell was supposed to be out in 2014. When you're designing products, they start the process years in advance, and at the time probably thought Skylake was going to be out by early 2015.
Add on to that that OEM's aren't going to want to redesign their computers after just 6 months of sales, so there's also pressure for Intel to hold back on the chips for a little. Personally, I'd be surprised if they start reaching consumers before x-mas 2015/CES 2016.