Check out "Designing Data-Intensive Applications" by Martin Kleppmann - http://shop.oreilly.com/product/0636920032175.do. It's still work-in-progress, but covers a big chunk of distributed systems material, is up to date and has good reviews. You can read the 10 out of 12 chapters via Safari Books Online.

The downside is that I pre-ordered the book in November, expecting it in April and it now shows November of this year as the release date on Amazon. I'd be surprised to get it this year at all. Haven't found other books of similar scope and recency though, so I guess I'll wait some more.