Here is an updated list of the remaining rumored/expected Leica cameras and lenses (see the previous lists here):
Leica Summilux-M 90mm f/1.5 ASPH lens
Leica is planning to release/resurrect more vintage lenses in the future (new APO lens and 135mm lenses rumored)
Silver Leica Summilux-M 28mm f/1.4 ASPH lens
Leica Andy Summers limited edition camera
Not sure anymore about the previously rumored Leica C-M full frame mirrorless camera after Leica denied the rumors.