Our product change notifications are available through our website : Product change notifications (PCN)
You can use life cycle status tool (see article : Check your part number's availability) with your obsolete part number for finding the associated PCN number :
Then, click on it or go though "SUPPORT -> Product Change Notification" case on our website's home page :
Then, paste the number of relative product change notification (you can also search with keywords) :
Finally, click on "Send me full changes" and you will receive it by e-mail.