Here's the cover of Kobato. Volume 4. It will be out December 26th.
Kobato.tv also added a new splash and wallpaper.
And for those who will be able to buy Kobato. DVDs in Japan, there are extra gifts if you buy them in these stores:
Animate: playing card with each volume, playing card case when you buy all of them.
Aniburo: original microfiber towel with the first 6 volumes
Chara-ani: original mini-cushion set with the first 4 volumes, original desk calendar with volumes 5-8, original telephone card with volumes 9-12.
And the Kobato. museum and panel exhibit will be traveling to other Animate stores around the country. Check out the schedule on their blog.