After the Learjet 55 & 55C (http://www.britmodeller.com/forums/index.php?/topic/234986356-amodel-172nd-gates-learjet-55c/?hl=learjet), Amodel is also to release a 1/72nd Bombardier Learjet 60XR kit - ref.72349
Source: http://www.aviationmegastore.com/bombardier-learjet-60xr-72349-a-model-amdl72349-airliner-models/product/?action=prodinfo&art=131967
Box art
V.P.