Not in any serious capacity. They may still have some stockpiled, but they are not relying on them.
I wouldn't argue that the M1A2 is not a good tank for the current era. I would argue that we can do much better in 15 years, nevermind 24.
And I would argue that the threat is evolving quickly. ATGMs are much more powerful. Top attack munitions will be widely available within the decade. While we are upgrading the intervehicle electonics substantially, the in vehicle could be improved A LOT. The point is to stay ahead of the threat curve. Waiting until we have to go to war with an outdated tank is not the time to start its replacement.
You have ask, is anybody else improving their tanks? I'm out of the loop these days, but are the Sov, er, Russkis or the PRC developing a new generation of tanks equal to or exceeding the capabilities of the M1A2? I don't see it.
I think the real revolution will along the lines of lighter vehicles.