Here is some more information about SN's fleet renewal. I've seen the following article in the Air International issue of April 2004: There might be some typing errors, since I typed it.
At a press conference in Brussels on February 26 on the occasion of the airline's second birthday, SN Brussels Airlines (SNBA) provided an update on its current status and future plans. Regarding fleet renewal, evaluation of all options is still ongoing and no decisions have yet been made, although CEO Peter Davies stated that the airline needs fleet changes in the 2006-2010 timeframe. Currently the airline operates a 38-strong fleet comprising six BAe 146-200s, 14 Avro RJ85s, 12 Avro RJ100s, three Airbus A319-112s and three A330-301s. Possible candidates for the fleet renewal comprise the Airbus A318/A319 and Boeing B737-600, plus the entire Bombardier and Embraer ranges. Leases on four of the Avro RJ100s expire next year, therefore a decision will have to be made fairly soon, although with the current good lease rates for the type, it may be retained in service rather than being replaced, particularly as it also has high passenger appeal. The decision is ultimately going to be based on wether the airline decides to go for higher capacity aircraft or increase its schedules using smaller capacity aircraft.
The A330s, leased from Birdy Airlines and presently operated under the latter's AOC, also come up for renewal next year, with A330-300s or Boeing B777s being considered as likely replacements, or possibly even the B767-400, although the latter is unlikely.
After reading this article we might probably exclude the B717 as a possible candidate. Further I wonder why they don't mention the B737-700. The say Airbus A318/A319 and only mention the B737-600

The B737-700 has +- the same capacity as the 319 !!
As for the 333's it would be great to see some B777's in SNBA's colours
Greetz
Chris
8)