According to Engadget, Sling has confirmed that a SlingBox client for the Palm OS is in the works:
After a bit of googling, I can offer you the following explanation of the raison-d-etre of the SlingBox:
Basically, a SlingBox gobbles up the antenna signal of your TV and then forwards it onto the internet. You can then tune in with a client. Essentially, this seems to be a more-less free version of MobiTV – but nevertheless, all Palm OS software that comes out is great!
Will you get the client when it comes out? Do you have a SlingBox?