Sugoi!
I guess Season 2 will probably conclude the whole story...?
They can now focus on the main story without to much fanservice.
The announcement was right in time for an possible October airing - I hope. The OVA comes at the end of September and the second season right after this would be optimal.
EDIT: A photo from the event of the announcement.
https://twitter.com/haganai_anime/st.../photo/1/large