i felt little change in this up-date:
1)- Battery ( little bit got better )
2)- little bit fast when opening menu & browning bet.

Also noticed that, some application are not working when updated to PR1.3 such as:
1)- RAW View.
2)- Ntscaner, ( scanning your downloads via Wi-Fi )
3)- i dont know if any more there......

Hope to find a quick fix for these issues.

Other than that, nothing special.
tnx