New Humble Bundle is up, and it's for:
Humble Book Bundle Arduino & Raspberry Pi presented by Make: consisting of home tech hobbyist titles aimed at robotics and DIY gadgets enthusiasts, based on the titular platforms.
Fixed tiers of $1, $8 (more titles added next week), and $15, and a bonus coupon for a discounted subscription to Make: magazine.
Unusually, they haven't put up a compact description of the contents yet in the bundle blurb area, but it seems to be mainly new titles with a few repeats from past Make:/DIY tech bundles.