For the 2.2.x branch the coverage module has:
- fixed some show stopping reprojection bugs
- fixed some performance issues (used to burn memory, now it slightly singes it)
The coverage module is incomplete but may be used for light work. You are warned however.
If you have a chance to volunteer check out the coverage branch, I am sure simboss would love feedback from early adopters.
The following issues (bugs and suggestions) have been raised on the geotools coverage module:
The coverage API took a huge blow for the 2.1.x release where we replaced the CoordinateSystem class it was based on. It was dragged almost into usability by Richard Gould for the uDig 1.1. release. The API it was based on is from an OGC specification (called GridCoverageExchange), as much time was spent working on the parameters for this api as was put into using it.