Just in case it got lost between all the other news 
for the upcoming change in the governance/catalyst voting, a new bech prefix for public/private keys was defined.
cardano-foundation/CIPs#342
private/signing key prefix: gov_sk
public/verification key prefix: gov_vk
it got merged into CIP-0005 already, so you can start using this prefix for any kind of governance public/private keys…
best regards, martin