After subsequent multiple testing with the TECP, liquid water has yet to be found in the regolith at Phoenix. This excerpt is from monday's press conference:

“We have been busy sticking the TECP needles into soils looking for signs of ice, almost liquid water, and water vapor, but we didn't find very much ... no dampness, no traces of not quite frozen water, not even the humidity in the air above the soil that you might expect to rise from the ice,” confirmed Hecht. “In other words, what we learned from the TECP is that the soil in our little corner of Mars is very, very dry.”