On the 28th, Hereditary Grand Duke Guillaume attended a conference at The Bridge Forum Dialogue, which supports interdisciplinary debates in Luxembourg. The organization is focused on connecting Luxembourg institutions with their European counterparts that are located in the Grand Duchy. The topic of this particular event was "Recovering from the crisis: Macroeconomic versus Real economy and social dimensions." Prince Guillaume and Princess Sibilla were also in attendance at the conference.
No photos just yet, but they'll be added if they're made available. For other speeches and events from The Bridge Forum Dialogue, see here, and for more about the institutions they work with see here. Additionally, for more information about this particular event and the main speaker, see Banque Centrale du Luxembourg. Finally, a little info from the Cour website.