According to this: http://blogs.sonyericsson.com/products/2010/09/23/update-on-updates/ SE have pushed the roll-out of the Android 2.1 back a couple of weeks. 

 Well, I must admit that I am disappointed of course, but when you see the bile and hatred spewing around the I am frankly amazed how childish and demanding people are acting. 

I just don't get it.