Apparently released in Australia not too long ago.
It certainly looks better than the previous iteration, looks like they removed that LED circle, rearranged some of the button locations and apparently uses an aluminium frame.
I don't expect too much else to change though. Bundled earbuds haven't changed. I would've liked them to maybe align the B series with the Japanese M series which includes noise cancelling and S Master MX all in a stick player but in addition an wireless receiver for music. At least one of those features would've been great to include.
Might consider getting this since it's so cheap.
Think I saw the Hong Kong Sony Style also has it avaliable as well.
Product Page: http://www.sony.com.au/product/nwz-b183f
Contrary to what the product page says, I'm pretty sure it will only support MP3 and WMA. Although if it does support AAC as well that's a plus.