In this article we present the most relevant new aspects from the COD2 project, which is based on an oral dialectal corpus of contemporary Catalan created as a continuation of the first COD compiled two decades before. In the first place, the new project intends to analyze the changes undergone by the Catalan language during this period. In second place, we no longer center the linguistic analysis on the traditional generativist techniques but on the tenets of Optimality Theory. And, finally, we use new dialectometric techniques based principally on probabilistic analytical procedures.