We're still pretty sure Microsoft is planning its own app store, but we really don't have more more than that. But Pocketnow's noticed a "coming soon" site at client.marketplace.windowsmobile.com that, low and behold, appears to be formatted for a mobile browser. And it also looks like the Skymarket name may have given way to "Marketplace," which probably is a good thing.
In all likelihood this will just be a download site for a standalone application, but that's speculation on our part. Either way, it looks like things are moving ahead.