Revision estimates are revised values for a stock from analysts over a given period. Analysts frequently update their average estimates, and the data provided to you is the most recent one. The hit or miss call is based on parameters like revenue, EPS, net income, EBIT, and more.
You can view the revision estimates on a quarterly or annual basis, with recommendations available from 7 days ago to 90 days ago. The revenue numbers are available on a quarterly and yearly basis.