Motorola Sage: AT&T's next Android phone?

We tend to go into full-on conjecture mode when we see an interesting FCC filing, but our instincts haven't let us down in the past, so allow us to throw something out on the table. A new Motorola just hit the feds with 7.2Mbps HSDPA and 2Mbps HSUPA on the 850 and 1900MHz bands, quadband EDGE, WiFi, Bluetooth, AGPS, and a digital compass. In other words, this is definitely an Android set, and it could definitely work on AT&T. The Backflip's already looking plenty long in the tooth, and we wouldn't be surprised to see Moto fire its second Google-powered volley on AT&T before too long -- it's certainly been doing its duties on Verizon (and to a lesser extent, T-Mobile) after all. Any thoughts on what wild form factor this one might be?