The Spanish translation for 1.5 has been released in a testing phase!
Thanks to Seekers, XanderTheOne, Jforte, Ignacius and Diaco, most recently Jforte (especially him) and Diaco for making the translation today a reality.
Note that is translation is in a testing phase so there will likely be some grammatical issues scattered about and potentially bugs. Any issues related to the translation remember to report them in this thread (Bugs that would occur in the normal game without a translation do not belong here)
Chinese and French have been updated to 1.5 as well.
The Italian translation by Loki86 (still in testing phase) will likely be updated for 1.5 within the coming days. (For feedback on his translation, check for the Italian Translation thread in the Median XL International section where he will be able to most quickly address your concerns)
Edit: Russian translation also now available for 1.5