Hardly. A "Gospel of Barnabas," purportedly by one of Jesus' apostles, has surfaced in Iran. It supposedly predicts Muhammed's coming, which would surpass Jesus. But here's the only relevant fact - it dates to the 5th or 6th century, and it has no textual history earlier than that to tie it to Jesus' apostle.
All of the so-called gnostic gospels date more than 100 years after Jesus with no earlier textual evidence. Most date to the 2nd and 3rd century with nothing to tie them to an eyewitness.
There are all kinds of ancient books that people claim are "lost" from Christianity or unfairly excluded. The key to always look at is the date of the book and if there's anything to tie it to an eyewitness. That's what sets apart the Biblical Gospels and gives them authority.
Once again, keep moving along, folks. Nothing to look at here.