The list included long-time Owls figures including the likes of Tom Lees, Kieren Westwood and Adam Reach and short-term flops including Elias Kachunga and Moses Odubajo.
Julian Börner and Andre Green left for fees and the loan terms of Jack Marriott and Izzy Brown were not renewed. The winds of change blew hard after a crushing relegation from the Championship.
So much water has flowed under the bridge since and without them Wednesday have launched into a promotion back to the second tier at the first attempt.
But how are the 16 departed Owls doing since that whirlwind summer?
Via shock moves abroad, a humiliating release, probable titles wins and injury woes, here’s a full run-through guide.
5. Jack Marriott
A huge flop at Wednesday as injury took hold of his loan stint, Marriott was released from his Derby contract and joined Championship new boys Peterborough, his former club. Scored against Sheffield United early doors but a hamstring issue took the heart out of his season. Fit again, he has made 12 league appearances in total for the second tier strugglers. Photo: George Wood
6. Kadeem Harris
After an unsuccessful trial at Reading, a shock free transfer switch to Ukrainian side Metalist Kharkiv came to be for Harris. The club are in the midst of a long winter break but look a dead cert for promotion to the top tier. He has two goals and an assist in 12 matches - of which Metalist have lost only one. Photo: MKFC
7. Moses Odubajo
Another player who never showed his best in Wednesday colours, Odubajo is a QPR player these days. He has played 23 matches for the club so far and having overcome injury has featured in each of their last four. Photo: Dan Mullan
8. Jordan Rhodes
Another flop forward who returned to the club of former glories, in August Rhodes slotted home a penalty to dump Wednesday out of the EFL Cup in the colours of Huddersfield. He's found life tough since then, overcoming a nasty injury to force his way back. He scored against Derby earlier this month. Photo: George Wood