It has:
*More cars on streets (deluxo, Sabre Turbo, Mr. Whopee etc.)
*New loading screen, menu
*Bus shelters
*PS2 water, newspapers on streets
*New blood
*New flames (again from PS2 ver)
*New hud
*New blimp
*XBOX wheels
*XBOX/PS2 d3d8.dll hack
*Some bushes are more detailed (same, but from SA)
*Detailed money
*Diablo Stallion
*Collision fix in little haiti, where you should get clothes is included
*White cop car, (enforcer and police maveric would be blue)
*Car headlights are from SA
*Blue cops
*Tommy has lighter T-shirt with Clumsy Parachuter badge on his wrist.
*TripleAs beta Vice City cars included
*Beta Police car

in next version:

* 'I went all the way to Alaska and all i got was this lousy T-shirt' T-shirt when 100% (replaced with 'I finished Vice City and all i got was this lousy t-shirt' )
*Palm trees are with more detailed textures

*Tommy cop outfit is blue
*New tit_wank.txd
*d3d8.dll spec settings will be better
*New water (same detailed as in pools)
*Some new textures in generic.txd
*Changes in *.dat files
*Firetruck has another logo texture
*Walton is rusty, old looking
*Flatbed, stretch and patriot are now colored
*San Andreas banshee replaces VC one.
*Some new billboard textures in airport
*Collision files changed