Indeed, Intel added USB 3 support to its chipset, but that's because the chipset has long included the logic for ports like that.
The CPU and/or chipset have nothing to do with how a battery is charged. Looking into this a bit more, it looks like Intel is supporting a wireless charging system called Rezence and is encouraging other companies to support it with Skylake but that's it. The two aren't tied technically and it's certainly not like Skylake is required for wireless charging or enables it somehow. The fact that Skylake reference platforms support Rezence gives basically no indication whether or not Apple will support it.
Skylake is certainly not tied to wireless charging technology. I've taken a look at the Rezence website and it looks good. But it will probably also be used for cell phones and other devices, not only for laptops.
In fact, now that I think about it for more than 3 seconds, it's fairly obvious that Apple won't support wireless charging. You can't do wireless charging through metal so Apple would have to give up their aluminum chassis to support it. I can't imagine that happening.
I am not sure whether wireless charging could be done through metal. Wouldn't it be possible to include some sort of port or something to allow the wireless charging to be done without giving up metal?
In any case, if wireless charging is the future, then Apple may not adopt it now, but it will eventually have to consider it in a few years.
Sorry that I appear (and am) snippy and impolite to Skaertus. Some context is required. He frequently misinterprets source material to make wildly inaccurate claims. We had basically the same go-around months ago about whether or not Broadwell laptops had to be fanless (and now we can see that most Broadwell laptops so far do have fans) and we also had a go-around about whether or not Intel purposefully delays the introduction of products to clear out old stock, which he supported with some links to news stories that said nothing of the sort. Anyway, I'm tired of it.
Well, I don't consider my claims to be wildly innacurate. There are Broadwell laptops which are fanless; I never expected all of them to be. But fanless ultrabooks make sense to a certain degree, and there are some laptops now that are able to achieve this. As for the delay in the introduction of products, Intel will never admit it; however, you can see that Intel delayed the original release date of non-delayed products following delays in previous products. You may take your own conclusions on that.