People can stay till September 18th (1 month). The package is 1 month (till Sep 18th) + 1 more month as in-lieu pay + 3 months (for signing no-lawsuit crap) + 1 week for every year above 10 years + 5 months Cobra lumpsum payment.
Three managers who went through the training confirmed the above items. No one really knew what is the total #of people or %. I hear 10%, but could be higher in some groups.