This is from the Telegraph, a paper who at this point basically reprints press releases on science and history with sensational titles (Not that they're the only guilty ones). Other major sources of this specific spin on the article are the Daily Mail and the New York Post (SfGate takes a slightly less sensational approach to the new evidence).
Clearly your crap detector should be tingling when you see these sources as the main sources and then bang! you find it: There's a new History Channel show premiering soon about this very escape - Alcatraz: Search for the Truth.
Gee I wonder why this is making the rounds? Will it end just like any other search for history show in the annals of television: "inconclusive evidence: the mystery is still out there and we'll keep searching we promise"
This is a different form of PG's Submarine PR hit http://www.paulgraham.com/submarine.html and frankly it makes me mad/sad that its so high up on a site like HN.
Feel free to continue downvoting me into oblivion and I'll continue shouting into the void.