Ann Arbor, Mich. — Former Massachusetts Gov. Mitt Romney (R) said Thursday that he would release a Medicare reform plan that would "not be identical, but shares objectives" with the Medicare reforms contained within Rep. Paul Ryan's (R-Wis.) 2012 budget.

Romney didn't specify when he would be expected to release his plan for Medicare reform, but warned it would differ in some ways from Ryan's.

"There's a lot you're going to expect from me on Medicare," he said.

"One point is that I applaud the fact that Rep. Ryan put forward a plan to keep Medicare solvent," he added. "He's also added choice to his plan, and included market dynamics."

Most mainstream Republicans have blessed Ryan's plan as a strong effort toward fiscal reform, though the GOP has weathered weeks now of attacks on the plan from Democrats, who have focused on the Medicare reforms.

Ryan has acknowledged that Republicans have run into problems in selling his plan, and there have been occasional signs of division among senior Republicans over whether to push for the Medicare provision within Ryan's 2012 budget.

Donald Trump, the host of NBC's "The Apprentice" who's considering a bid for the Republican nomination in 2012, on Wednesday criticized the Ryan plan as politically dangerous for Republicans while stumping in New Hampshire.

Romney isn't the only Republican presidential contender who has promised to release more detailed plans. Former Minnesota Gov. Tim Pawlenty (R) has said he'll release his own budget at some point during the campaign.