The standards are different (AzCCR), the format is different (online), and the way to answer is completely different! Although there is likely to be some multiple choice, there is more drag-and-drop, sliders, online calculators, etc.
Because the assessment is so novel, ADE has released sample test questions. The sample questions are available in multiple formats.
The first format is "student version". Students may click on the "assessments" to practice and to get a feel for the format and features, such as drag-and-drop. Teachers may wish to do this whole class, especially with a mimio. Teachers may also like to "assign" the assessment to students. Either way, allowing students to see the new assessment would help them get over the shock factor.
Another format is "teacher version". The teacher version is much like the student version, however it has tabs on the top. When you initially open the assessment, you are defaulted to the "Question" tab. Teachers may then click on the "Rationale" tab and see the correct answers. The standards tab is self-explanatory. The most interesting tab is the "Metadata" tab. Here is an example from 3rd Grade ELA:
How to View Your Sample Assessment
Go to Arizona's new page devoted to the new assessment: http://www.azed.gov/assessment/new/
You will see a list of available sample assessments. ADE is creating more assessments to be updated as soon as they become available. Even if you do not see your grade level represented here, it would be beneficial to see what is required of other grades.