The Davis Cup Semifinals will take place the week of September 14-20 (the week after the US Open). Here are the ties, with the country with choice of surface represented by a "c" next to the name:
Croatia(c) vs. Brachilombia
France(c) vs. Hungary
Captains of the team with choice of surface (BlackyM, Tati Cornet), please post which surface you choose here by September 6th (the middle Sunday of the US Open).