FW 190 falcon wing real or just paper plane

While going thru YouTube found a video by some guy describing a fw190 mission the cgi is great the planes look almost real. These new cgi generators are really fantastic. Anyway was trying to figure out what squadron was depicted and found it was JG 54. While looking them up found some stuff about the falcon wing. There were two types shown a radial standard fuselage with modified wings and horizontal stabilizers and one with a longer fuselage with a inline engine. Most say they were just concept drawings that never made prototype and a few say they stared work on prototypes but were never completed. Just wonder if they were just on paper or did they start construction of such. Like the were starting to experiment with sweeper wings and this might have interested them to see how seeped wings would effect aerodynamics. They have some models I found online a couple of resin conversions and a couple of 3D printed models.

 

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Typical paper plane known to whiffers and modelers as the V19. But the actual V19 was one of the conventional models that flew as a pre-production test carrier of the Fw 190 D with the Jumo 213.
WerkNr.:0041, Stammkennz.:CF+OZ, first flight. Dec 42,
Engine: Jumo 213C (universal engine), build condition: FW 190 "Versuch D Serie" (planned: FW 190 D-1), note: forward mounted engine, no pressurized cabin, fuselage extension by 0,50 m ....etc. Severe crash on 16.12.43.

 

One article I read says it lead to the eventual building of the Ta 152. Thanks for your time and info