We’ve just been told about a possible set of dates in Spain this July. The info comes from this site and it says (translated from Spanish):
“…the concerts would take place during three or four consecutive days in Salamanca Theater, a pretty hall with a capacity of 1000, ideal to create an intimate atmosphere of Radiohead’s music. Although it is not yet an official confirmation, it seems that the negotiations are very advanced.”
So, add this to the list of places, which also include Portugal and Brazil, Radiohead are rumored to be playing this year.
{thanks to Pau}