Mixed feelings on this one... As a disclaimer, I now work for a Sabre competitor, and one of the companies who was in the bidding for this piece of business. Disappointed to some degree our company didn't get the business, but also a little relieved, as working with AMR's IT department can be "interesting" to say the least...
I was also part of the first team to evaluate the three PSS solutions a few years back (2005), and about all I can say is that Sabre lost the business without any help from the other providers... A lot of people inside and outside AMR never thought they'd see the day where Sabre was given their walking papers, but fortunately, AA had the balls to walk away.
That said, I'm curious to see how HP (EDS) does with this. If it's a retread of Shares (you know, that clunky EDS system used at US and CO), then AMR made a huge mistake.
If it's truly a next generation platform, customer centric, built around relational databases, and also able to manage all the GDS to CRS connections necessary to survive in an interlining environment (something that Navataire Open Skies and New Skies still can't do very well), or an alliance environment, then it's a winner.