Where is that from and under which license is it available? :)

That's more like the "dry earth" texture we already have. I actually liked the other one better - modulo resolution and straw :)

Looks so much like a cracked, salty desert from the top. I think earth from the side should rather have bumps, but not long cracks.

Cracks are cool because they are prominent and structure the ground. They should be reserved for more special materials (like granite).

Well, yeah...
That's probably not the best earth texture we can find. It does inded look like (and actualy IS) the photo of the earth surface.
I do not like it very much (maybe just a bit more than our current texture).
Besides, I can not tell anything specific about the license. So we better stick to our good old "straw" texture for some more time...