iPhone SlingPlayer for iPhone - does it work with older Slingboxes, or does it not?

In an earlier post, I explained why I wouldn't be getting the SlingPlayer for the iPhone.

However, as the player was launched today, curiosity got the better of me, so I took a look on the App Store. If you scroll down to the bottom of the description, it states:

The Slingbox Classic, AV and Tuner are not supported for use with SlingPlayer Mobile on the iPhone and iPod touch, although they may stream with some configurations.

So, in other words "It MIGHT work, but we're not going to tell you which configurations will work and which won't. You'll have to pay your £17.99 to check".

What the hell are they playing at? They've already done themselves enough damage with forcing the hardware upgrades and now they're telling people they potentially needn't have upgraded after all?

Funny way to run a business if you ask me.

Update

The Sling Media site now states:

The Slingbox AV, Slingbox TUNER, and Slingbox Classic are not fully supported for use with SlingPlayer Mobile for iPhone & iPod touch. A Slingbox SOLO or Slingbox PRO is highly recommended.

Still as clear as mud, eh? What does "not fully supported" mean? Has anyone tried it on a Classic?