It appears Humble Monthly is changing. The new service includes adding some new perks and different pricing tiers and allowing you to choose games from a selection.
The new service includes the "Humble Trove" which allow access to a number of DRM-free games (currently at 90+ games).
Instead of being given games, you will have a selection from 10 games a month with the number of games allowed depending on your subscription level.
Once launched the three tiers will be:
Lite: ($4.99/month or $44.99/year) includes access Humble Trove (no games to keep) + 10% Humble Store Discount
Basic: ($14.99/month or $134.99/year) includes access to Humble Trove and 3 games to keep per month + 10% Humble Store Discount
Premium: ($19.99/month or $179.99/year) includes access to Humble Trove and 9 games to keep per month + 20% Humble Store Discount
Prices in USD
There is also the "Classic Tier" which is available only to subscribers to Humble Monthly at the time of launch of Humble Choice.
This tier will have access to all 10 games a month and includes the same perks as Premium but will still cost $12/month. If you ever unsubscribe after the launch of Humble Choice, you'll lose access to this tier forever.
I've never been a subscriber to the Humble Monthly but I am considering it to get the Classier Tier. This month's bundle looks pretty good though I already have COD WWII on PC