(SOLVED) Received Extra Keys??? ~ Humble Bundle for Android 4

Hello Steam Gifts!

So I had recently purchased the Humble Bundle for Android 4 on Monday. I had only paid $1 because I already had Machinarium because I knew it wouldn't be worth it to pay $5 more for a game already owned. Anyways, the Humble Bundle people added 5 more games to the list of BTA games including: Avadon: The Black Fortress, Canabalt, Cogs, Swords & Soldiers HD, and Zen Bound 2 (you may have seen the spam of these games on the giveaways list).

As I have said earlier, I had only bought the bundle for $1, just expecting to receive the 4 default games, but after the adding of the 5 games to the BTA list, I had received those 5 games (yes, excluding Machinarium) as a part of my bundle page. Now my question is if this was a mistake or does this always happen to people who purchase a "Below Average" bundle before more games are added.

EDIT: So it is said that if you do buy any of the Humble Bundles before more BTA games are unlocked, you do receive additional keys for those added games. Hooray for those "Below Average" buyers!