The Citation Sovereign can be regarded as a blown up Citation Excel. However, it is a lot bigger (longer), has slightly swept wings, double wheels on all landing gears, but no ventral fins. Also the tail is significantly different: it looks a like that of a Lockheed Jetstar.
Based on the Citation Sovereign Cessna developed the Citation Latitude, and that has even more in common with the Sovereign than the Excel. Compared to the Citation Sovereign the Citation Latitude has a different nose with four cockpit windows. Additionally, the Latitude has ventral fins, the Sovereign not.
This is the original version of the model 680. Compared to the later Citation Sovereign+ it has no bent-up wingtips but may be equipped with winglets.
Apart from improved engines and avionics the most apparent external novelty on the Citation Sovereign+, compared to the original Sovereign, are the bent-up wingtips.
Confusion possible with
The Citation Sovereign uses the front fuselage of the Citation Excel, so they are of course similar. For the rest the Excel is smaller, has straight wings, a smaller vertical tail and ventral fins.
Like to Citation Sovereign being derived from the Citation Excel, the Sovereign evolved into the Citation Latitude. The model number of the Latitude (680A) already shows the family rela-tionship. The main differences are the cockpit windows, length and (lack of) ventral fins. Note that the Sovereign+ has bent-up wingtips like the Latitude, so don't be fooled by them.
The four engines attached in pairs to the rear fuselage, large tanks under the wings and a cruciform tail are unique for the Jetstar, but the twin engine Citation Sovereign comes close in appearance, especially for the L-329. However, the Citation has different cockpit windows and no tanks attached to the wings.