There is a new Pana-Leica 25mm f/1.4 lens review at ePhotozine (Click here): “Saying that, £540 still seems a little steep for a standard prime, whether it be Leica branded or not. The excellent optical performance probably deserves slight premium price though, so the value of this lens may be relative to the user.”
The lens gets “Recommended” by the reviewer.
The lens is in Stock in asian stores but it’s still very diffcult to find it in other countries:
In USA you can find it in Stock at Amazon (Click here) or eBay (Click here). But you have to pay a lot for it!
In European countries you can get it in Stock for the normal price at Amazon UK (Click here) and Amazon France (Click here).