Some more stuff that I have found:
Darkoshen recently uploaded a comic that features a young boy being transformed into a grandmother:
http://www.deviantart.com/art/For-th...-pt1-643230752
http://www.deviantart.com/art/For-th...pt-2-643230739
http://www.deviantart.com/art/For-th...pt-3-643230730
I also commissioned from Da-Fuze a sequence where a boy on halloween is transformed into an adult anthro-cow:
http://www.deviantart.com/art/COM-Co...tftg-643981141
There is also the sequence "Growing Wrong" by gomyugomyu:
http://gomyugomyu.deviantart.com/art...rong-638882942
Finally I'm going to add a bunch of TGAP images salvaged from Metamorgirl.