There is very little information regarding the two phones available at this time. All that RIM has divulged is that the 9380 will have a full touchscreen interface like the Storm and a 3.2-inch, 480 x 360 resolution display. The 9790 on the other hand will have a 2.44-inch, 480 x 360 resolution display with a full QWERTY keypad. Of course, both the phones will be running the latest BlackBerry OS 7.
BlackBerry has released SDK with built-in simulators for each of these phones. This was actually the main purpose of the blog post. We're guessing the actual announcement will be happening soon enough.
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