From TFA:
One of these phones (the bottom-right one) became the Samsung F700 - a product Apple once included as an infringing product, but later withdrew once it learned Samsung created it and brought it to market before the iPhone
It seems the F700 was a Samsung design. Is the article incorrect in this claim?
Apple had already established it's iPhone design and has images of such from 2005. This unfulfilled prototype was from 2006.
From the article again:
This is what Samsung was considering putting to market in the summer of 2006, six months before the unveiling of the iPhone.
It would seem reasonable to assume that if they were considering putting it to market in 2006, they would have had the design well before then. The article is lacking in enough details on the dates to determine who which was actually first, but the first quote above implies that Apple thought the F700 predated the iPhone