By the way - I just looked at your installation instructions and I did not find anything about how to install in POWER Server environment, i.e., as a virtual machine (aka LPAR) on IBM POWER5 and later.
The ppc64le using KVM will obviously be different, but people using powerpc (historically 32-bit - is that correct, and why I cannot SMOKE perl with -Duse64bitall ?).
Anyway - I have an installation 'story' I wrote up quite a while ago.
http://www.rootvg.net/content/view/560/88/ I just reused this procedure to install Jessie and it still works fine. I like the command-line install very much. One of my reasons that debian is my personal favorite for Linux on Power.
BTW: I notice a slight difference in how 'login as root' works between wheezy and jessie. On both systems I have enabled 'root login' for my initial tests. With wheezy I cannot login as root on the console, but can login using ssh. On Jessie this is the reverse. I assume this is deliberate. (I'll open a new thread to ask how to manage this, because sshd_config - which I know - seems to permit RootLogin (--without-password) but I have not managed to get it to work. Normally I do not want this, but for testing - logging in as root is how I start learning many things (i.e., I skip installing sudo and sudo su -).
So, the question for here - regarding documentation - is there a CHANGES document I have missed that summarizes and/or details the changes (intended) between wheezy and jessie?