I guess Anakin gets around by some sort of spaceship, beats walking, if I read you right I think what you are saying is how do a ship develop from Naboo starfighter to an x-wing.
Reaserch, more advanced technology basicly just like on earth products improve by time.
Timeline of transportation, well In ANH Han says Falcon made the Kessel run in 12 para sec. Guess they use another time scale than we do on earth.
The X-Wings are supposed to be much more advanced. According to EU sources the X-Wing was designed only a few years before ANH. The design was stolen by the rebels who then used the ship from underneath the Empire's nose. So we won't see the X-Wing in the PT. We may see the Y-Wing and perhaps the Z-95 Headhunter.
It's strange, if you play Rogue Squadron the Naboo Fighter is a lot better than the X-Wing, but that seems to be an anomaly.
I'd say the Y-Wing will put in an appearance during the PT, as they are pretty ancient by the time of the OT. The Z-95 Headhunter, it would be great to see that because it has been mentioned as far back as the old Brian Daley Han Solo novels, maybe we will see Anakin piloting one during Episode III.
Sorry, Finti. I did actually register how your name was spelt, I just must have been brain-dead on the typing.
Unless George Lucas goes for a deliberate evolution-into-the-OT of the ships, I find it doubtful if we will see any of the 'old' ships in the PT (especially the Headhunter which was never seen on screen and so isn't technically canonical). The only time it was hinted that this would happen was with all those rumours about Mace Windu and the Millennium Falcon.
There is a definitive stylystic differnce in the PT. George wants to exercise the design department to reflect that it really is a different age back then- and doubly so in ship design. WIth the big gap between episodes III and IV there is plenty of time for the Y-Wing to get old and still not be seen in the PT, and I suspect they will stay out of it.