The next Sukhoi Superjet SSJ100 in Brussels Airlines livery will be registered EI-FWE. The following one EI-FWF will arrive in May. The 2 Superjets in Cityjet livery (EI-FWB and EI-FWC) will return to Cityjet.
Picture of an engine run, as this is a smoky one this might be the very first engine run (smoky cold start).
More information in the Brussels Airlines’ fleet renewal-topic.