Among the Twitter clients I occasionally use, Seesmic Desktop is the first to add support for Twitter lists. At this time, the lists feature is only available to those that are subscribed the Seesmic mailing list, but the are available and appear to be working. I suspect it won’t be long before we see the public release of this version of Seesmic.
Hopefully we’ll start seeing some of the other popular Twitter clients for desktops and mobile phones begin to release versions that support Twitter lists. On the other hand, I have to admit that I don’t yet understand all of the hype over Twitter lists.