GeoServer 1.7.0 release candidate 4 is available for download:
http://geoserver.org/display/GEOS/GeoServer+1.7.0-RC4
This release candidate contains some key bug fixes which get us closer to the official 1.7.0 release. Also included are some improvements which address some WFS memory leaking issues.
The entire change log can be found here:
http://jira.codehaus.org/browse/GEOS/fixforversion/14627
Downloading and trying out the release will be of great help in moving us toward 1.7.0. Please report any issues in the bug tracker.
http://jira.codehaus.org/browse/GEOS
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The GeoServer Team