Leica D-Lux 4 is listed as discontinued at B&H. Not really a surprise, after the new Panasonic LX5 was announced yesterday. The word on the street is that Leica D-Lux 5 will be announced at Photokina and of course, it will be based on the Panasonic LX5.
Andreas Kaufmann mention in the DiePresse.com (in English) article that "there could be one or two new products” at Photokina this year. The second product is expected to be some kind of a Leica R-lens solution.