point release

A point release is a small or relatively minor software release that fixes or improves an existing software product.  

Whereas a major release may occur on a planned, often regular basis every year or two, point releases are typically released as needed. A point release typically does not include new features.  

The term was inspired by the way software releases are numbered. For example, a 4.0 release would be followed by version 4.1, which would be followed by version 4.2.  The number after the decimal point refers to the incremental change that has occurred.