for those unaware, this announcement is just another development in the mess that is the Scarborough RT replacement. Up until the end of august, the plan was to replace the RT with an LRT line, and extend it to centennial college & Sheppard ave. In august, literally days after the zoning applications were applied for the new stations, the province announces that it will allow a subway to be built if the city approves and the Federal government delivers the extra funds. $85 million in sunk funds for the LRT plan are assumed lost, and we enter this current bumbling mess. last week the Provincial Tranport Minister announced that they would be building a shorter subway to just Scarborough Town Centre (the current terminus of the RT), with only 2 stops. (on a 5.8km route that currently has 4 stops) The minister states that this is due to the feds refusing to communicate about funding. (they kept cancelling meetings with the minister) Then today, Harper announces he will fund it... All the while many people claim that the original LRT plan will be better as it is $1 billion less to construct, covers a larger area, and can be finished 3 years earlier.
a nice graphic showing the different options on the table by the National Post, the "City subway proposal" is now the one going through.