As far as I know, we're still current. I hate not being 100% positive about that, but the book has been in development for a long
time, there is a lot
of material in it, and there have been several people working on it. Unfortunately, I don't know how well everyone has tracked changes in the LPI objectives.
That said, the worst case is there might be some small gaps in the material. I'm planning on using this book for classes I'll be teaching, so, trust me, if there are any issues with it, we'll make updates here: http://www.oreilly.com/catalog/lpicertnut2/errata/