Here we are, friends: the $549 WinMo smartphone from Palm . Initial opinions: it’s a nice size, very slim. Smaller than the Centro and the OS is fairly peppy. A dedicated WiFi button on the side makes picking up networks much easier and they’ve stripped out a lot of the MSN garbage from the WinMo start-up screen. We’ll be working with it over the next week and report back on Wednesday, presumably embargoed so Walt Mossberg can review it.