Like Altec's competing product, the OnBeat has a swiveling mechanism that allows you to dock your iPad--or any other iOS portable device, including the iPhone and iPod Touch--and turn it vertically (portrait mode) or horizontally (landscape mode). And like the Octiv Stage, the OnBeat will also retail for $149.99 when it's released in April.
JBL mentions that the OnStage has a composite video output for sending video from your iPad to a TV, but it doesn't appear to have the tilt capabilities of the Altec dock. We look forward to having a closer look--and listen--as soon as we get a review sample.
Note: Though JBL doesn't says whether the unit will be compatible with both the iPad and iPad 2, we think the iPad 2 should fit just fine in the dock. However, we'll wait for JBL to confirm that.