we are working on that and will release it very soon. if you want to do it yourself, you can hack the water CG shader with a calculation for that specular component for one specific light transform (i guess the sun), based on the water bump normal, viewing angle and light direction.
It's simple task. Shader and sreen are attached. I guess you'll need to tweak bumpmap a bit, cause standard one it doesn't look very nice. Note, that you can't use that 'pond' from standard assets as my shader requires mesh normals and tangents as well. But it works fine with plane. Currently it's not compatible with deferred lighting.