I found a couple of new reviews around the web:
A detailed review has been posted by 3D-Kraft (Click here). Many different mini tests canbe found at Soundimagesplus (Click here). Than there is a short review with nic epictures at Gakuranman (Click here). And new Leica DG Summilux 25mm f/1.4 Sample Photos at ePhotozine (Click here).
The good news is that the lens is in Stock in Europe at Amazon Germany (Click here), Amazon UK (Click here), [shoplink 24917 ebay]eBay (UK reseller)[/shoplink] and very overpriced at Amazon US (Click here).
P.S.:There is a new Nokton 25mm review at Openpn (Click hee to read the google english translation). Image samples can be found here. There are plenty of lenses in Stock on [shoplink 15659]eBay (Click here)[/shoplink].