The AutoCAD 2010 Hatch improvements seem to be a big hit with the Beta customers. They love being able to grip edit non-associative hatches and they like the red circles that get displayed when the hatch command can’t find a valid boundary.
Also many customers have reported that hatch just works better. We did some bug fixes reported by customers so some drawings that couldn’t be hatched in previous releases including those far from 0,0 (or hatched incorrectly), hatch correctly in AutoCAD 2010.
Most Beta customers discovered the default grip edit behavior (stretch or add a vertex). They didn’t see the hover tooltip that informed them they could tap the CTRL key to toggle different options (Remove, Convert to Line/Arc).
Tip courtesy of AutoCAD Product Designer Karen Mason
From the Help