There is at least one “Skill” supporting ST, and the unofficial hack(s) are in the forum - and ST has dropped their usual numerous evasive hints about upcoming integration.
Given that Amazon and Samsung aren’t exactly frenemies and that the Echo team only picked a handful of UPNP-enabled IoT platforms to integrate directly with in their first round (ie, the very low hanging fruit) it’s not shocking that it’s taking a while for the ST integration to happen.
Amazon updated the Echo app today. They also changed the app name/logo to Alexa. Mainly seems to be bug fixes and an improvement in the Flash Briefings. No changes to the connected options as well as no change on web access.
@wrongbenson once the SmartThings integration comes to fruition I believe many of the device types could be altered for them to do what you want them to do.
For example, right now if I say any combination of “Alexa, (turn on | open) my ___________.” the device turns on or if I say (turn off | close | shut) the device turns off. I’m 75% sure I also tried unlock/lock a while back and that worked as well. So if the device types are customized of have a switch or setLevel capability then it should be able to be controlled with the Echo.