New SAT book - only 4 tests!?!

In amazon, it says the book will have only 4 official tests! How are we supposed to study with only 4 tests? Is the CB going to publish other tests?

SAT prep is not just about practice tests – I recommend spacing out your tests (perhaps once every month or 6 weeks) rather than a full test every few days or week, in order to gain the maximum benefit, and to visibly see your score change.

That said, CB might release more tests in the future, but I don’t know.

It’s a new format, which hasn’t been administered at all. It’s not really surprising.