Yeah, it's a bit confusing for someone new. There are two printing systems - one for (older) bitmap-printers (with some drivers!!) and the new, unversal postscript system.
On a PC all Printers are delivered with there own drivers, which we don't have. So TP will be needed further on, as long as all printers cannot understand PS (which never will happen, I think)
And I don't think that Mos-team will combine both systems (GUI's) in one system together.......