dj khaled et al out here grindin

The Wikipedia information appears to be correct.

To the best of my knowledge, the "original version" (the one on which Lil Wayne appears) was never commercially released, but I'm 90% sure it appeared on an "Urban Radio Promo Only" CD.

The song debuted on the Hot 100 at #38 on the chart dated July 19, 2008. This chart would have been issued online on July 7, 2008. According to my iTunes file, I purchased the digital single on July 7, 2008 at 10:40am. (When it comes to collecting Top 40 hits, I don't like to waste any time!!) The digital single is credited to "DJ Khaled featuring Akon, Rick Ross, Young Jeezy, Lil' Boosie, Trick Daddy, Ace Hood & Plies". This is also how the song was credited on the Hot 100 and was the only version that had been commercially released during the song's two-week Top 40 run. It thus far has only been issued digitally.

The song had already been on the R&B chart since late May, but I don't know how the song was credited at the time. Joel Whitburn's Hot R&B Songs 1942-2010 gives the same artists' credit as the digital single.

The We Global album was not released until mid-September and contained yet another version, featuring neither Lil Wayne nor Young Jeezy.