From NeoGAF.

http://www.neogaf.com/forum/showpost.php?p=184510409&postcount=1656

"I've heard concrete information that Halo 5 launch numbers will be some of the lowest yet. Like 1.4-1.5M low. I'm willing to polygraph with an admin if need be, I've seen how inside information is dealt with here :P"

He was vetted by Head Mod at NeoGAF.

http://www.neogaf.com/forum/showpost.php?p=184512938&postcount=1681

The source said it was retail only, and other companies like EA, Ubisoft, Take-Two report around 10%-20% digital sales, so probably 20% maximum coming from digital would be around 1.68 - 1.8 million total.

http://www.neogaf.com/forum/showpost.php?p=184513817&postcount=1706

That's worse than even my low expectations.

Then again it goes with the data from:

October Trends PS4 sizzles, while Halo fizzles, and Wii-U remains constant

Including digital?

I don't see how those numbers are bad. 1-1.5 mil in less than a month? Sounds good to me.

Why is this in Sony discussion?

Sorry just included in OP, that was just retail, going from other companies which report around 10%-20% coming from digital would be around 1.68 - 1.8 million including digital.

Ugh, I was sure I put Microsoft, going to ask mods to change it.

Changed the discussion type for you :3

I believe digital is more than that. Well it's rumor anyway so it doesn't matter 

I read that in that thread, and that guy seemed pretty sure. If he's full of shit, then he's getting a ban anyway. But, we'll find out soon. The labyrinthine PR statement gives off an air of... something being off.

Kind of hard to believe those numbers, even harder if it is worldwide. NPD is next week, we will have a better idea.