Has the SAT changed in any way since 2008?

I am a high school student planning to take the SAT I this November. I'm currently studying for it with "Barron's How to Prepare for the SAT 2008" book. In it, I encountered a lot of phrases such as "if a fraction (improper/proper doesn't matter) fits the grid-in spaces, just put it in; if it doesn't, convert the fraction to a decimal on calculator and write as many numbers as the spaces allow (no need to round off)". There are some other general guidelines and tips regarding the SAT test format. Have these rules changed since 2008? Will I have to buy a new book to study for the SAT? Those SAT study books tend to be really expensive, so I inherited a spare unused book from my older sibling.