SEGA's Super Monkey Ball [App Store] has been updated to version 1.01 in the App Store. The new version includes the following "New Features":
Seemingly absent are the rumored control sensitivity improvements that had been previously discussed.
However, TUAW claims that there have been unadvertised improvements to the controls:
In cursory testing (by yours truly), it does appear the update improves player control. As promised, the "dead zone" where the ball stops moving altogether is larger, and movement overall has become less erratic