As already posted before, Sony will release at least 6 new native E-mount lenses in near future. Now according to latest rumors, first two E-mount lenses could be GM lenses.
The first GM lens could be a new wide-angle full frame E-mount lens. Could be Sony FE 14mm f/2.8 or f1.8 GM Lens or a wide-angle zoom GM Lens. This lens will coming in the spring of 2020.
The second GM lens could be a super telephoto prime full frame E-mount lens. Could be the Sony FE 300mm f/2.8 GM lens. This lens will be coming ahead of Tokyo Olympics 2020 in Summer.