Announcement will be at 2:30 ET Thursday and some other notes

The announcement will be outside the Georgia Statehouse. Newt and Georgia Governor Nathan Deal, who has endorsed a Gingrich run, will also talk about reasserting the 10th Amendment.

Fox News has some details on his upcoming schedule:

He has been flirting with the idea for months and will travel to the First in the Nation Presidential Caucus state of Iowa on March 7th where he will address the Iowa Faith and Freedom Coalition. The trip will be Gingrich's third to the Hawkeye State in 2011 and his ninth visit since 2010.

Gingrich will also make an appearance in the first in the nation primary state of New Hampshire on March 17th when he attends Bernie Streeter's Wild Irish Breakfast. The annual St. Patrick's day breakfast in Nashua is a major political event in the Granite state that typically draws both Republicans and Democrats.

From CNN:

Will Rogers, the former chairman of the Des Moines-area Polk County Republican Party, told CNN that Gingrich is certain to run 'a high level campaign operation here' if he decides to move beyond the exploratory phase.

"My feeling is that he looks like somebody who is going to run," said Rogers, who has known Gingrich for six years and plans to work for him if he embarks on a full-fledged candidacy. "He is doing the things that people need to do in order to become a frontrunner in the state of Iowa."

ABC:

Iowa Republican Party Chairman Matt Strawn said he has been one of the most frequent visitors among likely GOP candidates.

"He's been helping local candidates and the parties raise money and appearing at local grassroots events -- the kinds of things you need to do in a caucus state like ours," Strawn said.

Mississippi Governor and potential 2012 rival Haley Barbour had this to say of Gingrich: "I'm crazy about him." Barbour was RNC chairman during Newt's Speakership.