According to the latest rumors, Canon will release the RF 70-200mm F2.8 L IS USM Z lens with an internal zoom mechanism in the next few months.
It is also reported that two more lenses are under development: one of them is a full- ultra-wide-angle zoom lens in the L line, and the second is an RF-S version of the EF-S 17-55mm F2.8 USM for mirrorless cameras.