Bids for the CSC were due today, and 2 additional bids have been publicly announced. the French/Italian consortium has proposed their FREMM Design, used by France, Italy, morocco and Egypt, and under consideration by Australia. in an interesting twist, the consortium maintains the 15 ships can be built by Irving at the original 30 billion project estimate.
A bid was also received from Alion Canada, offering the Dutch Provincien Command frigate. this ship went into service with the dutch navy in the early 2000’s so is only somewhat newer then the current Halifax class. I have no record of this ship class visiting Halifax.
UPDATE:
A 4th bid has been announced coming from Spanish firm Navanta. The F-105 is a variation of the Spanish Álvaro de Bazán-class frigates and is the basis for the Norwegian Fridtjof Nansen class (Pictured above), and the under construction Australian Hobart Class. The ships use the American Ageis system.