Samsung Captivate Glide is running still on 2.3.5 only, they are also waiting for our developers to port CM7, so that they can port it to there device.. they are also not having any ASOP, CM7 & ICS Roms..
they will receive ICS update
http://www.att.com/gen/press-room?pid=22620&cdvn=news&newsarticleid=34101&mapcode=consumer