What Apple did with the M1 MacBook Pros was to add a pair of M1 models to replace the existing 1.4 GHz i5 & 1.7 GHz i7 entry-level Intel MBPs with two Thunderbolt ports. The higher-end 2.0 GHz i5 & 2.3 GHz i7 remain as Intel MBPs and have four T/bolt ports