Ian Levine has been on a Twitter tear this evening on the rumored discoveries. I'll let his final word
speak for itself:
Absolute Last Word. I spent 35 years looking for episodes since I saved The Daleks from being destroyed. I am convinced none have been found
He could very easily be correct. At the same time, I can't dismiss the possibility that his vehemence is down to the fact that he wasn't at the center of this purported discovery.