I am sure BCN is set to begin. There were rumours about a BCN a while ago and even rumoured that Iberia were to lease a BAe 146 from WDL to serve the route. Now that BA Cityflyer needs to find work for their RJ100s, BCN, VIE and HEL are top candidates for new routes, alongside GLA, BHD and IOM on the domestic market. Remember that BA cityflyer needs to employ ten RJ100s....
As for IOM, I think it is not a question of more services, but whether BA Cityflyer would be able to drive the incumbents out of the market.