The larger model SRS-GX50IP (in the picture to the left) features a 20W x 2ch output while the smaller model, the SRS-GM5IP (in the picture to the right), features a 2W x 2ch output and they both have support for the iPhone 3G/3GS/4 and the iPod class/touch, fifth generation iPods, and iPod nanos, generations 2 through 6. Both models also come with a mini remote control as well which seems like a pretty good deal.
The SRS-GX50IP will set you back $245 while the SRS-GM5IP will only cost $99. No word on whether either models will make an appearance in the United States but if iPhone/iPod speaker docks are what you are looking for, there are already plenty of other choices in the market.