OSM project archival

"This collaboration will result in the OSM project proceeding towards project archival with the CNCF as we focus our team resources on the Istio project."  https://openservicemesh.io/blog/osm-project-update/

How long will there be support/updates to OSM AKS extension?
Will there be an easy upgrade path to Istio?
Is advised to switch to Istio now?
