Microsoft had promised to deliver free 250MB Hotmail accounts by the end of September, but at the moment almost no one has received an upgrade yet.
"MSN Hotmail customers in several markets will be upgraded to receive 250MB of free storage and the ability to send 10MB attachments. MSN Hotmail customers will also receive MSN Calendar free, enabling both individual and shared calendaring. This upgrade is a large-scale undertaking as we bring increased storage to tens of millions of people. We're rolling out our service in a smart way to ensure we're delivering a great experience for all Hotmail customers therefore we are unable to offer a completion date."