From what I understand the new customer ferry offering from Brittany Ferries will mirror much of the type of service they have offered to/from Cork first operated using the "MV Connemara" and will now be used using the "MV Kerry" vessel.
By the end of March, the following arrival & departures will apply to Brittany Ferries services using Rosslare Europort:
Rosslare to Bilbao, Spain X 2 departures per week as from Friday 28th February
Bilbao to Rosslare X 2 arrivals per week
Rosslare to Roscoff, France X 1 departure per week as from Monday 23rd March
Roscoff Rosslare X 1 arrival per week
I presume there will be no "Foot Passengers" or "Cyclists" permitted which has been the case with it's Cork to Santander service using the same vessel "MV Kerry" to/from the Port of Cork's Ringaskiddy Ferryport facility in Co. Cork. A lot of the trade on the new Rosslare to Bilbao service will come from freight although; there will also be a limited tourist passenger element if passengers intend to travel by car using the ferry.