One of the best things about Android is the ability to pretty easily load custom ROMs. Like the hardware but hate what the manufacturers have done to Android? No problem, just root it and flash a custom ROM like CyanogenMod. Unfortunately for prospective Samsung Galaxy S4 buyers, it looks like you're stuck with what Samsung gives you.
At least, the CyanogenMod Samsung porters aren't up for the challenge. Apparently it's because none of the team wants one, and having two variants of the thing will be a pain in the arse to maintain:
"Nobody at Team Hacksung (the team behind Galaxy S2, Note, S3, Note2, G Tabs... official CM ports) plans to buy it, neither develop for it. There are two variants which will be a pain to maintain, [and] the bugs we have on the S3 will probably be there on S4, too (camera), and we all know Samsung ability to release sources while staying in line with mainline. Yes Qualcomm releases sources, but Exynos sources we had were far from [working on] actual Galaxy products. I'm pretty sure the same will happen for this one.
That's a uniform "no" from us."
That's not to say others won't try and there are other custom ROMs, not just Cyanogen of course, but if the team behind every other Samsung CM port reckons it's going to be a right mission, I wouldn't hold your breath. Does that put you off buying the Galaxy S4, then? [XDA via Android Central]