Some people are asking for improvements and bug fixes on GDAL PostGIS Raster driver. Since r20912, there is an improved version of the driver in GDAL trunk. I’m working on it. And I know there are people making efforts to bring PostGIS Raster to some Desktop viewers by using GDAL. Many thanks!
Apart from that, I’m working on PostGIS Raster MapAlgebra. First version before January (I hope…)