Alright, so up until now there hasn't been much in the way of study material for the LPI certs, especially not LPIC-2. That's all changed, however, and I have the proof right here on my desk.
O'Reilly: LPI Certification in a Nutshell (Second Edition)
The description on the site is still from the first edition, and states that it doesn not cover anything past the 101 and 102 exams. However, when you look closer at the cover, you'll notice the black banner across the top left that states "2nd Edition, Pass Both LPIC-1 & LPIC-2". It does, indeed, cover both sets of exams, and I am using it as we speak. The second edition was printed July 1st, 2006, and is definately up to date with the lastest exams.
Aside from that, I can also recommend everyone head over to CBT Nuggets and check out their training on both LPIC-1 and LPIC-2, done by an excellent instructor: Perry Fizzano.
Thought that might be of help to those who are in the same boat that I am, and desperately need better study material for the LPIC exams.