Expect the Bombardier decision about the 728/928 programme a good deal sooner than the end of the year. More like the end of next month. There are a lot of reasons why Bomb are likley to buy.
For example:
1) They don't have a product that can compete with the boys from Brazil in the 90-110 seat market (the CRJ900 tops out at 86 seats).
2) They have a history of taking on projects and companies that are almost dead in the water and turning em around (Learjet, Canadair, DeHavilland, Shorts, Johnson and Evenrude outboards) it's what they do.
3) They want to keep in the German government's good books - there's a HUGE train deal in the offing.
On the flip side you can bet your booties Bomb will drive a hard bargain - they'll want to see the end of the 328 -TP and JET (which is pretty much on it's way out anyway - the backlog on the JET only goes out as far as September anyway). Plus they'll want all kinds of loan guarentees fro the German government.
Technically, I reckon Bomb want the 728 and more especially the 928 it's just a question of thrashing out the cost of aquisition.