This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I don't think it ever will be. JDK is the baseline of Java, and unless you are creating Portlets, there is no reason to have them, most development are not doing Portlets, so the numbers aren't even enough to make it part of JDK.