Precedent: Chase introduced the refreshed British Airways VISA in mid November 2009 with a 100,000 mile bonus . 50,000 miles after their first purchase and another 50,000 after spending at least $2,000 in the first three months. The offer was gone by mid January 2010.
There have been more recent 100,000 mile/point offers for this card, but the requiring spending has increased substantially.