It has been said repeatedly, might as well say it again. When the Voluntary program happened, we were told straight up that the offers were higher than usual. When we got our letters, you would have noted that the weeks/year of service were notably generous. This was done to encourage people to self-select.
The people that remained did not self-select, and are now being exited. The incentive to do it voluntarily is no longer in play.
That doesn't mean the package won't be generous by typical standards - it will be. But comparing it to the voluntary program is incorrect, and should probably be avoided. If you wanted that sweetened offer you should have taken it when it was on the table. You aren't owed it.