This means that your arraignment is on that date. Read my answer to your other questions for more information.
Your arraignment is your first appearance in a criminal case. Your rights will be explained to you and you will be given notice of the charges. You will enter a "not guilty" plea and make a decision as to whether you want a speedy trial. Bail enhancement means the DA has scheduled a request to increase your bail. You should have an attorney to help you with these matters.