Using Classic Outlook on Windows for personal email, calendar, and contact management
I have never switch to the new 'style', but they did change it to being able to open pst files. Back in September when they announced the change, they said in December they would no longer support the old one version. Any emails you want to keep have to be moved into the live Outlook folders. I believe they have done this to make A LOT of money - if you need more space you will have to purchase it.