Attendees of the upcoming Powder Keg conference have reason to rejoice. The two-and-a-half day entrepreneurship conference, to be held in downtown Indianapolis, has added five more high-impact presenters to its already-stacked keynote lineup.

Only a few hundred people will be able to catch these presenters live, since attendance will be limited to this year’s Powder Keg. But there are still some tickets available, so let’s get to know the new headliners:

Julien Smith

New York Times Best-Selling Author

Julien is a bestselling author of two books: the first, Trust Agents, was a New York Times and Wall Street Journal bestseller. His most recent bestseller, The Flinch, has over 100,000 copies distributed. Julien’s upcoming book, The Impact Equation, is due to release October 25, 2012, and you can read more about it on his popular blog, In Over Your Head.

Kate Endress

Co-founder and CEO at Ditto

After graduating from Stanford Business School Endress teamed up with two engineers from Google and Nokia to start Ditto, an ecommerce site for designer eyewear with proprietary 3D virtual fitting technology. Earlier this year, Kate and the team at Ditto raised $3 million in a round led by August Capital to further enhance the technology behind the service, and to grow the company’s own eye wear business.

Scott Dorsey

Co-Founder and CEO at ExactTarget

Dorsey Co-Founded ExactTarget, Inc. in December 2000 and has been its Chief Executive Officer and President since December 2000. He is responsible for the overall leadership and direction of ExactTarget and Director of BidPal, Inc. He serves as a Member of Executive Committee at Indy Partnership, Inc.

Sarah K. Peck

Founder at Landscape Urbanism

Sarah Kathleen Peck is a writer, designer, storyteller and mover. She is the founder of the award-winning Landscape Urbanism website and leads the communications team for SWA Group, an international landscape architecture and urban design firm. Based in San Francisco, Sarah finds herself constantly moving: she is a 20-time NCAA All-American swimmer who has successfully swam from Alcatraz 9 times, most recently raising $29,000 for Charity: Water and swimming from Alcatraz in her birthday suit as part of the campaign.

Chris Baggott

Co-Founder of ExactTarget and Compendium

Chris is a Co-Founder and former-CMO at ExactTarget, which started as a family dry-cleaning business. He also o-authored the book Email Marketing by the Numbers, one of the most definitive books on email marketing. Chris left Exact Target to start Compendium, a content marketing platform that helps organizations capture and create original content. After a long career as a SaaS entrepreneur, Chris committed himself to making a difference. He bought Tyner Pond Farm, and has immersed himself in learning about “alternative” farming methods.

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Powder Keg is a Verge production, supported by a passionate, growing startup technology community, including our wonderful sponsors. Learn more about our sponsors, speakers, and conference passes at powderkeg.org