The possibility of Spider-Man joining the Marvel Cinematic Universe was first reported on last year after the tepic critical and commerical response to The Amazing Spider-Man 2. The "Sony Hack" would reveal that it was something actively being discussed between Marvel Studios and Sony, with talks seemingly breaking down shortly after, though other reports would later claim otherwise.
Earlier today, we heard that the deal may be done, with Spidey set to appear in Avengers: Infinity War. Comic Book Resources have since reached out to Sony, and a studio representitive told them that the report is an "old rumor" with "no validity whatsoever." Marvel and Disney have not yet responded. Ultimately, this may mean nothing, but it is odd that they would respond this way.
Based on past experience, there's really no way of knowing how to take this as denials have sometimes been proved wrong, and were other times spot on. It's a guessing game!
Regardless, we're going to find out one way or the other soon enough, as Sinister Six is still supposed to be coming out in 2016. So, start counting down the days until that pointless movie is released and the sure to be terrible third instalment of The Amazing Spider-Man franchise. Yay?
F*** you, Sony.