About offer Windows Phone 8 Development Internals (Preview 1) available now .
Is this still valid
Example 1: If you purchase the Preview 1 eBook for Windows Phone 8 Development Internals on October 30, 2012, you will receive Preview 1, Preview 2 when released, and the final eBook when released—all for $10.
or expired? i.e can I still buy the preview for 10 and get all editions?