From Ashes DLC has been confirmed. Those who purchase N7 Collector’s Edition or PC Digital Deluxe Edition of Mass Effect 3, will get it for free, below is the BioWare announcement from their forums.
“We’re happy to confirm that Mass Effect 3: From Ashes DLC will be available at launch for all platforms. For those of you who have purchased the N7 Collector’s Edition (including the PC Digital Deluxe Edition), you will get this content at no extra charge. We’ll have a lot more details for you later this week! Stay Tuned!”