This book has a publication date of 2008, and while it thoroughly covers the history of rock music through the 1980's, it's very unfortunate that it does not provide significant coverage of the last two decades. The 00's are almost over, and there have been significant changes to rock over the past two decades that deserve much greater coverage.
There is barely any coverage of the grunge era, and little or no coverage of the post-grunge era, the fusion of metal and hip-hop (Linkin Park, Rage Against the Machine, Papa Roach), the new alternative metal scene of the 00's (Disturbed, Breaking Benjamin, Chevelle), the re-emergence of punk and the new genres it has spurred (emo, new garage rock, pop-punk), the fusion of rock music with dance (Finger Eleven, Good Charlotte), or the thorough history and maturing of rap and hip hop. The last two decades have provided a very rich history of developments in rock music and should be covered if you are going to claim to provide a "complete" history of rock music through 2008. Rock music does not just cover the "60s, 70s, 80s, and today." "Today" should not be inclusive of the 90s and 00s, for each decade deserves its own unique chapter in the history of the most advanced form of popular music in the history of the world.