Apart form the Ofcom Reports, which seem pretty invaluable, the two most recent major pieces of research relevant to Wales would seem to be the Communities @ One evaluation – major piece of community informatics investment by WAG & EU, run by Wales Co-op Centre, and the Atkins report highlighting the benefits of broadband to the economy generally – which is interesting reading next to the BERR Caio report in 2008 (one of the many on the future for UK broadband by BERR). On the surface, both would seem at the different ends of the spectrum.
Also, have just come across the RIMS scheme by WAG.