Jackson suffered a torn Achilles during Friday's game against the Pelicans, Shams Charania of ESPN reports.
Jackson will start in place of Myles Turner (ankle) on Wednesday versus Boston, Alex Golden of the 'Setting the Pace' podcast reports.
Jackson ended with seven points (2-8 FG, 3-6 FT), nine rebounds, two assists and four blocks over 22 minutes during Monday's 119-115 loss to the Magic.
Coach Rick Carlisle said Jackson (groin) is available for Friday's game against the Knicks, Dustin Dopirak of The Indianapolis Star reports.
Jackson (groin) is questionable for Friday's game against the Knicks.
Jackson (groin) is out Wednesday against Detroit, Tony East of SI.com reports.
Jackson (groin) is considered day-to-day, Dustin Dopirak of The Indianapolis Star reports.
Jackson is out for Thursday's preseason game versus the Hornets due to a groin injury, Tony East of SI.com reports.
Jackson (undisclosed) is not on the injury report and should be active for Thursday's game against the Cavaliers.
During an appearance on The Wake Up Call, Pacers coach Rick Carlisle said Jackson (undisclosed) will not play in Tuesday's preseason game against the Hawks.