2 answers
No - Salesforce will support Visualforce for the forseeable future. Here is a link to all planned feature retirements:
https://help.salesforce.com/articleView?id=000240291&language=en_US&type=1
New Salesforce features will only be developed for Lightning, they've been very clear about that. However Visualforce continues to work with Lightning and will do for a long time. If anybody has any reliable information disproving my answer, do please post it for the benefit of the community.
