Reviews: Rapid! Rapid! Rapid! …and systematic
HLWIKI's page on Rapid Reviews
Evidence summaries: the evolution of a rapid review approach
National Collaboration Centre for Methods and Tools - Rapid reviews: Methods and implications
What is a rapid review? A methodological exploration of rapid reviews in Health Technology Assessments
Feel free to add any sources / articles that you know of. This list doesn't capture everything but it may help if you want to know more about the topic.