This is what I gathered from the USATF list of entries. I was going by what names I recognized. I assume 12thman.com will have a list out like they did for the swimming trials.
100M: Ameer Webb, Jeneba Tarmoh
200M: Ameer Webb, Curtis Mitchell, Devin Jenkins Jeneba Tarmoh, Kamaria Brown, Ashton Purvis
400M: Fred Kerley Jessica Beard
800M: Donovan Brazier
5000M: Natosha Rogers
10000M: Natosha Rogers
400H: Robert Grant Shamier Little
PV: Chase Wolfle, Audie Wyatt
Discus: Shelbi Vaughan
Javelin: Sam Humphreys, Devin Bogert Maggie Malone, Audrey Malone
Heptathlon: Annie Kunz
100M: Ameer Webb, Jeneba Tarmoh
200M: Ameer Webb, Curtis Mitchell, Devin Jenkins Jeneba Tarmoh, Kamaria Brown, Ashton Purvis
400M: Fred Kerley Jessica Beard
800M: Donovan Brazier
5000M: Natosha Rogers
10000M: Natosha Rogers
400H: Robert Grant Shamier Little
PV: Chase Wolfle, Audie Wyatt
Discus: Shelbi Vaughan
Javelin: Sam Humphreys, Devin Bogert Maggie Malone, Audrey Malone
Heptathlon: Annie Kunz