You've got the HTC Snap and the Samsung Jack, and it looks like LG is following in their footsteps by introducing the GW550. The GW550 is another front-facing keyboard, 2.4-inch QVGA, Windows Mobile 6.1 Standard phone.
Just when you thought WM Standard was on its last leg, devices running the standard OS seem to be coming out of the woodwork. The GW550 also sports a 3 megapixel camera, "global" 3G, and 7.2Mbps HSDPA/2Mbps HSUPA capabilities. Based on the photos, the GW550 is follows the conservative appearance the Snap and Jack have, and it has the same lines as the Nokia N71.
No word yet from LG on pricing or availability. Depending on pricing and what the final specifications shake out to be, if you're in the market for a WM Standard phone the LG GW550 might make the choice a little more difficult to make.