Well, JetBlue in the US have announced that they will be selling some of their E190 fleet. The config of these aircraft would seem to be a perfect match for Virgin too, with LiveTV and all installed already....
From the JetBlue press release (accompanying financial results)
"The company has made the prudent decision to reduce our rate of growth over the next three years through a reduction in both our Airbus 320 fleet and our EMBRAER 190 fleet. "