Drummond has shown himself to be the league's best rebounder, and is increasingly taking on more offensive responsibility.
He's averaging 17.3 points, an NBA-best 15.2 rebounds, 1.7 steals and 1.4 blocks per game.
Together with Reggie Jackson (who did not make the All-Star team), Drummond has powered the Pistons to a 25-21 record. The team hasn't finished with a winning record since 2008.
We will have more on this story, including reactions from teammates, coaches and more later.
Other All-Star reserves were, in the East:
Paul Millsap of the Atlanta Hawks, Chris Bosh of the Miami Heat, Jimmy Butler of the Chicago Bulls, John Wall of the Washington Wizards, Isaiah Thomas of the Boston Celtics and DeMar DeRozan of the Toronto Raptors.
In the West, reserves are:
Draymond Green and Klay Thompson of the Golden State Warriors, Anthony Davis of the New Orleans Pelicans, Chris Paul of the Los Angeles Clippers, DeMarcus Cousins of the Sacramento Kings, James Harden of the Houston Rockets and LaMarcus Aldridge of the San Antonio Spurs.
UPDATE: Here's the Pistons' press release with a quote from Dre:
AUBURN HILLS, Mich. - The NBA announced today that Pistons Center Andre Drummond has been selected to the 2016 Eastern Conference All-Star team as a reserve. Drummond becomes the first Piston since Allen Iverson (2009), and the first Pistons draft pick since Grant Hill (2000), to be named an NBA All-star.
"I'm honored to be selected by the coaches to my first NBA All-Star game," said Drummond. "I'd like to thank my coaches and teammates for putting me in a position to have the kind of season I'm having. I'd also like to give a special ‘thank you' to all the great Detroit Pistons fans for your continued support. I plan on going to Toronto and represent you and the Pistons organization to the best of my ability."
A fourth-year center who was drafted ninth overall in the 2002 NBA Draft, Drummond leads the NBA in rebounds (career-high 15.2 rpg), defensive rebounds (454), offensive rebounds (246) and double-doubles (38) while averaging a career-high 17.3 points per game. He's recorded five games with 20-plus points and 20-plus rebounds this season and has nine games with 20 or more rebounds (no other player has more than two games with 20 or more rebounds). Drummond has also recorded 20 games this season with 15-plus points and 15-plus rebounds - Dwight Howard has the next most such games with seven.
At 6-11, 279-pounds from the University of Connecticut, Drummond scored a career-high 33 points to go with 21 rebounds at Chicago (12/18) to become the first Piston to record 30-plus points and 20-plus rebounds since Dennis Rodman had 34 points and 23 rebounds vs. Denver (1/2/91). Among Eastern Conference centers, Drummond ranks fourth in scoring (17.3 ppg), first in rebounds (15.2 rpg), third in field-goal percentage (52%), first in steals (1.7 spg) and tied for fifth in blocks (1.4 bpg).