Here you have it folks!!
http://community.sprint.com/baw/community/sprintblogs/announcements/blog/2012/05/16/htc-evo-4g-lte-update
http://community.sprint.com/baw/community/sprintblogs/announcements/blog/2012/05/16/htc-evo-4g-lte-update
"arrival on or around Thursday, May 24"