Attached are some quick and nasty shots of my new a57 and old a330.
As you can see the a57 is a bit of a big boy. However the benefits are you get a much larger battery (nearly double the kwh). So far I like focus peaking and the the steady shot is much better than before.
Also it is FAST.
However its quite a beast for a guy with small hands, I can’t reach many of the options one handed.