Dassault's next biz jet, developing under the name Falcon SMS/ Super-Midsize, is always mentioned as a replacement for the Falcon 50.
PARIS AIR SHOW: Dassault reopens engine competition for Falcon SMS
Business Aviation Turbine Technology: AINonline
However, articles I've found (including the above) indicate that Dassault was originally looking for 10,000 lb thrust engines and now is actually going back to engine manufacturers and asking for MORE power. This is interesting because the original Falcon 50 only had 3x 3,700 lb engines and even their current Falcon 2000LX which most people would consider to have a large (as opposed to super-midsize) cabin uses only 2x 7000 lb engines to get its 4000nm range. What type of "super-midsize" plane could Dassault possibly be building that would need all that power?
Even Dassault's Falcon 900LX with 4,800nm of range and a wide cabin with 3 passenger seating sections uses 3x 5,000 lb engines... one engine out would give you 10,000 lb of total thrust... supposedly less than the one engine out thrust on the Falcon SMS. I am assuming that the Falcon SMS will have 2 engines... seems like a very safe assumption considering that even the Falcon 7x's engines make only 6,400 lb each.
Will this new Falcon SMS be a replacement for the Falcon 50 AND Falcon 2000 AND the Falcon 900?
Very interesting... I hope that they start releasing details soon.