From this post
in Alien BOB's blog, it is easy to see what is planned.
Let me quote his comment posted: July 10, 2012 at 00:28:
I had two ulterior goals with this.
First of all: my promise to Pat Volkerding to come up with a re-distributable Java package after Oracle changed its license. And second, to ensure that I would be able to repeat the process on an ARM architecture. Back in december I had decided I would order my first ARM based work horse using the donation money that had accumulated: the TrimSlite. ARMedslack did not have any Java – I think it still does not.
So, please be patient everybody. Unless Eric encounter unexpected obstacle on his path, we can expect that OpenJDK be included in Slackware 14.
That's my guess, at least
EDIT Only a guess, I admit, see Alien Bob's post below.