Where i can read about differences between 1.6 and 1.7?
(and whats new in 1.6.0.2813 in comparison with 1.6.0.2769)
found it

1.6.0.2813
1.7.0.2812
Regions not supported in design time rendering?
1. ctrl+c, ctrl+v not working, to copy controls from designer.
2. if we slowly resize any control, (for example edit field), size will be reseted after preview repaint. Maybe, preview refresh should be executed after mouse up.