La base y mejoras, algun pequeño cambio como en la barra de nitificaciinrs, hd pcs quality para contactos, modificado el teclado. Yo aun no tengo jelly bean.
Los sitios siempre trabajan para ellos, y tambien se equivocan, reciben pases gratis a eventos o lanzamientos, leaks, y bue... Esas cosas que hacen samsung y apple. ;)
Dejo una review rapida de un usuario normal de xda sobre la ota de taiwan
For me, the JB update has made HOX A differnet phone altogether.
POSITIVE POINTS:
• Switching between home screens has a new look now and is much smoother.
• I've got 4hr 30min screen on time with still 19% of juice left. ( I'm 24/7 connected to Wifi so keep my mobile internet off which gives me longer battery life )
• SMS app now offers block list. It's much snappier and has animations as well. The best thing about SMS app is the new smiley faces. They are BIG and look gorgeous 
• Browser is much improved.
• Tapping screen takes picture in camera app. This holds for both rear and front facing cam.
• There's no LAG in the phone now. Few animations are designed such that it takes time to complete. Doesn't mean it slows the phone down.
• I use Smart Keyboard Pro so can't say anything about default keyboard.
• Caller's picture is no more blurred.
• USB OTG now works.
• ...and many things which I've miseed...
NEGATIVE POINTS:
• There's a power saver icon in notification area from which I can't get rid off.
• WIFI direct isn't working yet.
• Can't see screen on time by default now.
CONCLUSION:
This is one of the finest updates. Phone is much more snappier and has few additional animations. I'm happy with my HOX now 
Yo les aconsejo que si no saben ingles usen PROMPT TRANSLATOR
SkyDragon Rom V1