Hello,
I've recently read about the Oracle Georaster support in Geoserver
[1]. Are you aware of the WKT Raster development? [2]. The project
aimed to get native raster support in PostGIS. Our collaboration
could be interesting for Geoserver too, and for community, of course.
Best regards,
Jorge
[1] http://blog.geoserver.org/2010/05/17/oracle-georaster-custom-jdbc-access/
[2] http://trac.osgeo.org/postgis/wiki/WKTRaster