Close but no cigar. If you search “sprint playbook” on google, you first regualr search result is, “Sprint-Introducing The BlackBerry 4G Tablet”. So, it looks like there still on time for a summer release, however if you click on it takes you back to sprints homepage! That’s why its close but no cigar. Hopefully we will be hearing more soon about the 4G BlackBerry PlayBook from Sprint!