Leica will announce one or more new products in April. The potential date I have seen people refer to is April 14th, but I cannot confirm that since I have not received any information from my sources. The most likely candidates to be announced are the Leica Q3 and/or the Leica M11 Monochrom cameras (see all rumored Leica products here):
Confirmed: codename “Wilson” is the Leica Q3 and codename “Rene” is the Leica M11 Monochrom