Probably not, remember the air has more physical space to distribute and dissipate heat in contrast to an iPad Pro.Nothing is official, just a rumour but if the m6 ipad pro needs VC then also the Macs will need...starting with the M6 Macbook air since for the M5 Macbook air is too late
This will be one of those distinguishing factors for the pro line, like Oled, HDR, promotion etc.