Can't find any recent applications on the ULS for Decatur or Grady county, but here's a news article from back in July on the upgrade:
E911 upgrade to help officers | The Post-Searchlight
The article mentions December 17 is a go live date, and it says that "frequencies will remain the same" (which means they will still be on VHF) but using some kind of digital modulation.
It says Motorola got the contact, so if it's P25 phase I, and unencrypted, than any digital capable scanner can monitor. If it's P25 phase II, then only the GRE PSR-800 can, if it's MotoTRBO, then no commercially available scanner can tune in as of yet, though there are other ways of monitoring unencrypted MotoTRBO systems.