The simplist way to know when the DLC is out is to follow a few of the accounts on Twitter.
Now I know, here it comes... "But I don't have a Twitter!" or "I don't want to sign up for a Twitter account" and "I don't want to check out Twitter all night to see when it's released".
Fair enough and I have the problem solved here for you.
Set those 4 accounts to send you messages via Text Message! So once they tweet that it has been released, you'll receive a text message and you can go online and download it.
Just make sure to turn off the Text message option off after you download otherwise you will still get their tweets sent to you via Text message... unless of course that is what you want. You don't even have to check your twitter account ever again unless you want to do it again for the next DLC.
The elite page is saying 13 hours. So that is how I will know
Many of the new players probably don't have Elite. I know I haven't used it once since BO2 came out.
Ah yes I see. I wasn't writing this to be sarcastic at the OP just incase anyone thinks I was lol. I just genuinely meant that the elite page is showing how many hours.
Never took it as that way. You're all good. No problems with you. Just stating a lot of players don't have it.