It appears Brock Lesnar's return to the WWE will indeed come tomorrow night at Wrestlemania 28 in Miami, Florida.
According to another report from Dave Meltzer at The Wrestling Observer, Lesnar has arrived in Miami, and has signed on for a one year deal with his former professional wrestling home.
The former UFC Heavyweight Champion retired from MMA after a loss to Alistair Overeem in December, and UFC President Dana White has given his blessing for Lesnar to return to the WWE. Per Meltzer's report, Lesnar's one year deal will see him work several dates, but he won't be working the type of schedule that led to him leaving pro wrestling in 2004.
Penick's Analysis: Lesnar is expected to wrestle at next year's Wrestlemania 29 event, but what his ultimate role throughout the year will be remains to be seen. A match with Lesnar and The Undertaker for next year would make sense, considering the confrontation the two had in October of 2010 that led to a lot of speculation, but regardless it seems like this will be more than a one off appearance for sure.
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Awesome news!