RIX-LTN, -TRF and -TKU initially.
In terms of new routes this is rather disappointing.
Riga - Turku: Already operated by airBaltic
Riga - Torp: airBaltic and Norwegian operate to Oslo-Gardermoen, Ryanair will shortly commence Oslo-Rygge
Riga - Luton: airBaltic operate to Gatwick, Ryanair operate to Stansted
Good for competition though...