Hi Pascal,
On the Support Communications page it gives the steps to subscribe:
http://support.netapp.com/info/communications/index.html
Product Communiqué Subscription Option
The Product Communiqué program is an optional subscription service where important product announcements are delivered to you via e-mail.
To subscribe, please create a case via the Feedback form and select My Profile and Subscriptions as Category 1 & 2.
Thanks,
Kevin