Times change and DSLRs change too! The advent of mirrorless cameras particularly changed the competition for DSLRs and so it was time to update the DSLR Buying Guide for 2012.
The guide has been completely revised and an entire new page is now devoted to choosing a brand of DSLR and it covers differences between lens lineups on great detail. This is very an important consideration for those buying their first DSLR who do not have an investment of lenses already. Once you choose, it gets much hard to switch.