I think it's actually 2 new routes (Hamburg and Oslo as you rightly say), plus 6 routes extended to all-year round:
Flybe announces eight new routes from Birmingham | News | Travel Trade Gazette
Did Ryanair not used to operated to Birmingham to Oslo Rygge? Anyway, good news, and hopefully this indicates that some of these new BHX routes are performing well - does anybody know how they're actually doing?