If you are an MSDN subscriber (Ultimate or Premium) you now get more Windows Azure resources. Professional subscribers are now also included in the promotion.
See here for more details. If you have already taken up this offer and you are an MSDN Premium subscriber then you will automatically be upgraded to the MSDN Ultimate offer.
In order to activate your benefits Sign-in to your MSDN benefits page Click on the Windows Azure Platform link from My Account and follow the steps to activate Windows Azure (for limited free access). You'll need your credit card or follow the Steps to set up invoicing for Windows Azure to sign up. If you use more than the amount of services included with your MSDN subscription, you will be billed to your card for these overages. You can visit the Microsoft Online Services Customer Portal to look up your usage at any time. Go to the Windows Azure Developer Portal to access your Windows Azure subscription