I just bought TW2 and downloaded the new patch, my question is does this patch also add the other dlc that where released with the other patches or did I shoot my self in the foot by installing the new patch first?
I'm not 100% sure about it. Take a look in your main Witcher 2 folder, there should be a folder called CookedPC, the DLC's should be stored there with a .dzip extension.
There is a full 1.3 patch and an upgrade from 1.2 to 1.3 patch. If you installed the full one, you've got it. (Cannot be installed on GoG's digital edition though.. that has to be upgraded patch by patch... or was it just me?)