According to NASA TV there was no significant visible plume from the impact of the spacecraft. There is good spectographic data and it does show Sodium a cause for some excitement as it wasn’t expected.

Regarding the spectorgraphic data, they are being cautiously optimistic despite the lack of a visible plume,  but they point blank refused to make any definitive statements about water. Most of the real science will be done using spectographic analysis and we will just have to keep waiting.

LCROSS Image Crater