Hey, was wondering the same thing, so I did a little digging. BTW there's a similar post here
Fender CS jazz vintage pro 1964
Seeing as there's nothing on any fender site about the Vintage Pro had to get specs from MW.
64 custom jazz bass NOS
http://www.fender.com/customshop/ins...s%26reg%3B+NOS
Series Time Machine™ Series
Model Name ‘64 Jazz Bass® NOS
Model Number 015-1300-(800)
Colors (800) 3-Color Sunburst,
(Nitrocellulose Lacquer Finish)
Body Select Alder
Neck Maple, "C" Shape,
(Nitrocellulose Lacquer Finish)
Fingerboard Round Laminate Rosewood, 7.25” Radius (184 mm)
No. of Frets 20 Vintage Style Frets
Pickups 2 Vintage Jazz Bass Single-Coil Pickups
Controls Volume 1. (Neck Pickup),
Volume 2. (Bridge Pickup),
Master Tone
Pickup Switching None
Bridge American Vintage Jazz Bass
Machine Heads Vintage Style Reverse Machine Heads
Hardware Nickel/Chrome
Pickguard 4-Ply Tortoise Shell
Scale Length 34” (864 mm)
Width at Nut 1.50” (38mm)
Unique Features Built as if Bought New in its Respective Year and Brought Forward in Time.
Strings Fender Super Bass 7250ML, NPS,
Gauges: (.045, .065, .080, .100),
P/N 073-7250-005
Accessories Deluxe Black Hardshell Case (Orange Interior), Strap, Cable
Case Deluxe Black Hardshell Case
And from MW for the 64 Vintage Pro
http://bass-guitars.musiciansfriend....ass?sku=423456
* Model name: Fender Vintage Pro 1964 Jazz Bass
* Colors: 3-tone sunburst, fiesta red, honey blonde, vintage red
* Finish: Thin nitrocellulose finish
* Body: select alder (ash with honey blonde finish)
* Neck: maple with large C shape
* Fingerboard: round laminated rosewood
* Nut: bone
* Frets: 6105 style
* Bridge: American Vintage Jazz bass
* Machine heads: vintage-style reverse tuning machines
* Hardware: nickel/chrome
* Pickguard: 3-Ply White
* Pickups: 2 Vintage Jazz Bass single-coil pickups
* Controls: volume 1. (neck pickup), volume 2. (bridge pickup), master tone
* Strings: Fender Super Bass 7250ML, NPS, (Gauges: .045, .065, .080, .100 P/N 073-7250-005)
* Accessories: strap, cable
* Case: deluxe black hardshell bass case
Looks pretty much identical from the spec list. Perhaps the other thread about this is right and it's just re-introducing it at a lower price and maybe even distancing from the aging process of the other time machine models, seeing as NOS isn't aged at all...
Oh almost forgot, you can get it in different colours! That's the only difference I can see. I'd have to pick one up and play it though, major lust for the Custom 64 for years now. Played one through a Mesa 400+ into a fridge baby it was like what I'd heard inside my head as what a bass should sound like but real. Wish I wasn't broke at the time as the 400+ is discontinued and the 64 just keeps going up in price.
), but it might be worth investigating if you're feeling brave 
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