Will verison let me keep my alltel prepay plan?

Im an alltel customer migrated from first cellular of southern illinois. alltel bought out first cellular which was local coverge only in southern illinois. Now I prepay $50 / month for unlimited anytime minutes and my coverge espanded to all alltel owned towers only, not the whole coverge area. I really want to know, will my coverge espand on this "obsolete" plan after Im switched to verison, or can I even keep this great plan.The post on their website sounds like they plan to phase out all of alltels prepay plans when they're switched to verison. Ive had my same phone number and plan for 9 years now, It'll be a shame to see it go.