According to Weezy himself, his 9th studio album, Tha Carter IV will be dropping May 16th. He revealed this in an interview with Sway of MTV news.
The album's lead single "6 Foot 7 Foot", was released on December 16, 2010 and was produced by "A Milli" producer Bangladesh. The song samples from "Day-O (The Banana Boat Song)" by Harry Belafonte.
On March 23, 2011, "John", which features Rick Ross, was released, and is produced by Polow Da Don. The song heavily samples Rick Ross' I'm Not A Star, the first track off Teflon Don.
Update 3/6/11: The 9th solo album from Dwayne Carter Jr. is now set to arrive on August 29 according to Universal Motown