As a follow up to this, in February of 2012 were told that we would get ICS for the Atrix 4G in Q3 of 2012. After Google took over, Punit Soni makes this wonderful post on his G+ account about how the update process is going to get better and is going to be more transparent. Then just a week before Q3 came to an end, Motorola went into an information blackout regarding the updates followed by a cancellation announcement on an obscure post on their forums late that Friday night.
Even the Atrix 2 didn't escape the knife. Just days after it finally received its ICS update, it was announced that it would not receive JB, while at the same time it was announced that the Bionic would receive both.
How does Google expect other OHA members to adhere to that agreement if their own company can't? As far as I'm concerned, Google just blazed the trail for Android's death march.