From one PCLOS Phoenix user to another, the long and short of this is that if your computer is connected to a network (let's say a home wireless network, for example, like we have), any other computers on that network that are on will probably show up in the left pane of Thunar (I have to confess here that I'm just guessing at how this will work once implemented in Xfce), just like your Home, Music, Documents, Downloads, etc. folders currently do, with that computer in the list. You can then click on that computer in Thunar, and any and all shared folders on that computer will show up in Thunar. I would expect that this will likely be the way it works, kind of like "My Network Places" or "Network Neighborhood" in Windows.
Like I said, this is what it will allow you to do in Thunar, but I can't swear to just HOW it will be done. The actual steps involved and what to look for and such could very well be entirely different. Like I said, as far as the details go, this is just a guess on my part. But I do know that the ability to do this will become a reality in Thunar come sometime in January. Does this answer your question?
Hope this helps! :-)
Fred in St. Louis
PS -- well, I see that Sproggy answered at the same time I did and that yes, drives on other computers will show up in Thunar, albeit probably not under names that you're used to.
Question for Sproggy: When the final ISO for this is released, is wiping off our current Phoenix installations and doing a clean installation of Phoenix with Xfce 4.8 the ONLY way to install the Xfce 4.8 edition when it becomes available, as opposed to a rolling-release upgrade?