If IIRC, whenever I open my Canon file on Lightroom, the WB sliders are set to a certain values. And I always thought that it might be the indication of the preset WB setting for the file, but given that nothing "baked" in to the raw file, I am free to adjust them. The reason why I developed this understanding was because many event shooters said that if you had time, it's best to tune the right WB so that you can save yourself a bit of time in post processing because the file already got the correct WB.