Here is an updated list of upcoming (rumored) Leica products (see the previous lists here):
→ Leica Super Vario Elmar SL 16-35mm f/3.5-4.5 ASPH lens to be announced on April 9th
→ New Leica L-mount related announcement coming on June 14
→ Silver Leica Summilux-M 28mm f/1.4 ASPH lens
→ Leica Summilux-M 90mm f/1.5 ASPH lens
→ Leica is planning to release/resurrect more vintage lenses in the future
→ Leica Andy Summers limited edition camera