Plenty of custom ROMs to be honest for the captivate (similarity to Nexus S ftw) Heck there are even Jelly Bean ROMs out for it already.
I can't edit the posts more than once...I really don't get that restriction.
To be fair to Rogers...I doubt it's adding the bloatware that takes time. (it takes about 2 seconds to push apps to the system directory, maybe a couple hours to compile a new ROM)
More likely they are testing the software on some ISO approved schedule that requires them to have the firmware for X amount of days, including back end work to ensure compatibility. (That said...the GNex doesn't have these problems regardless of ROM)
Generally speaking, if you aren't rooted and don't really want to bother with custom ROMs just wait. GB was and still is a good bit of operating system.
After Extensive searching the internet, I can say with perfect certainty...
Infuse isn't listed on Samsung's official blog as one of the phones getting the ICS upgrade, however there have been contacts with Samsung support that indicate that it will come.
...custom ROMs for the infuse aren't 100% yet.
Phone Factory (ETA) Rogers (ETA) Custom ICS ROM
Acer Liquid E Never. Never. Work in Progress
Acer Liquid Metal Never. Never. Work in Progress
HTC Jetstream (Tab) Never. Never. Bootloader Locked
HTC One X Released Released Bootloader Locked
HTC Raider Released Released Bootloader Locked
LG Optimus 3D Released Released
Motorola RAZR Released unknown Bootloader Locked
Samsung Galaxy Nexus 4.1 (in a week) 4.0.1-2 Available
Samsung Galaxy Note Released unknown Available
Samsung Galaxy Q unknown unknown Probably not?
Samsung Galaxy Rugby unknown unknown I have no idea…
Samsung Galaxy S Glide unknown unknown Probably not?
Samsung Galaxy SII LTE Released Released Available
Samsung Galaxy Tab Released unknown Available
Samsung Galaxy Infuse unknown unknown available
Sony Xperia Arc Released unknown Locked (a)
Sony Xperia Arc S Released unknown Locked (a)
Sony Xperia Play Never. Never. Work in Progress
Sony Xperia S Released unknown Available
Sony Xperia X10 Never. Never. Locked (a)