Of course, despite the crisis and the economic problems here, many distributors keep the spanish language as an option; sadly, Larian is not going to do it, for understandable reasons.

As Raze said in this same thread:

Currently, localization is handled by the retail distributors, and Larian does not have deals in place in all regions. If a Spanish (etc) distributor isn't found, it is possible a localization could be done another way.