I was just there to see my service tech and has the right side in stock and is waiting for the left side. He told me that the cams that came with my car are not compatible so they're switching them out.AP 2.0 cars do need a camera upgrade to work with FSD Beta. Tesla switch to RCCB cameras for AP2.5. Theoretically no Model 3 should be AP 2.0, but it's not impossible they installed RCCC cameras in older models.
Tesla starts retrofit program for cameras on older vehicles with 'Full Self-Driving'
It's also possible there are newer revisions to the cameras than those two (which also is not impossible given Tesla changes things a lot).