August 1st will be a busy day for Kazuma and company. The 12th Konosuba light novel by Natsume Akatsuki and Kurone Mishima, titled "Female Knight's Lullaby," will be out in Japan. It promises more of Darkness in aristocratic trappings, plus a mystery girl who shows up calling her "mama!" There's also a limited edition version (out July 24th) with a new, second OVA.
In addition to this, there's another spin-off. This one focuses on Dust, a character who has hardly been in the anime, but who the author has talked up. A Spotlight For (Even) This fool! Gifting this Wonderful World with Blessings! Extra follows the delinquent (you might remember him as the blond who visits Kazuma in prison in the anime), whose business in stolen goods earns him a frightening warning from Vanir.
Rather than the regular creators, this one is writte by Kuma Hiru (author of Reincarnated Into a Vending Machine) and illustrated by Hagure Yuki.
Elsewhere, GameGate (yeah, that's what they're called) has released a Megumin alarm clock app with the arch-mage threatening the owner with explosion magic and/or eating the sleeper's breakfast.
There's also three new t-shirts from Groove Garage