Source: Wrestling Observer Newsletter
Shawn Michaels has been telling friends as of late he plans on retiring at WrestleMania. His contract is set to expire soon and he has talked about wanting to spend more time with his children as they grow up.
Michaels himself has made noise about retiring in recent years, to the point that WWE actually scripted jokes about it on Raw.
After taking time off in 2008, he made noise about deciding not to come back. Like previous times he'd taken time off, WWE would call him back to return and he would. He also said in a radio interview last year that he had told the company his retirement date (which at the time was this year's WrestleMania).
On the other hand, he's brought up the idea of wrestling well into his fifties, though only a match or two per year. Michaels is not advertised for any shows past the night after WrestleMania when RAW emanates from the US Airways Center in Phoenix, Arizona.