[CP+ 2011] Sigma 公佈了最新的 DP2x

CP+ 2011: Sigma has announced the DP2x digital compact camera,
a revised version of its DP2 large-sensor compact camera that captures
three-color information at 4.7M positions (14M total data points).
It features new AF algorithm for faster auto focus, first seen in the DP1x.
Other features remain the same including a 2.5" LCD, True II processing engine,
and P/A/S/M shooting modes.

好像是 更快的自動對焦
其他的都沒有什麼改變??

請問有人可以解說一下, DP2x 有什麼特別改進的地方?
另外有沒有聽說到別的消息是
會公佈大改版的DP系列 之類??

因為單從表面規格來看
感覺這台 DP2x 真的沒什麼誠意

消息來源: http://www.dpreview.com/news/1102/11020809sigmadp2x.asp

另外想請問一下 DP2s 跟 SD15
成像的分別大嗎?