Difference in models - Samsung HD 860/ 870

Hey people,

What the difference between these two models?
HD 860 & HD870 ?

http://www.samsung.com/Products/DVDP...D_HD870XAA.asp

I cheecked the specs on official links, but no use cant figure out any…

Anybody 2 help ?

Well both upconverts 720p/1080i and progressive upscaling…
Both supports same playback features…

I wonder than whats is diff. ?

New firmware for 860hd, does anyone know what it does( v1 20070512144654453_BUILD from samsung)