Most custom ROMs require separate builds for separate carrier variants - one for an international model, one for an AT&T model, one for a Verizon model, and so on. CyanogenMod is trying to consolidate some of its most popular builds so that a single ROM ZIP file will work across several various device variants. Last month the CM team combined three HTC One builds, and today they're doing the same for Samsung's Galaxy S III, Galaxy S4, and Galaxy Note 3.
More device variants go through unification process. d2, hlte, and jf-unified go live tomorrow! http://t.co/6riYIhNHfy
— CyanogenMod (@CyanogenMod) February 18, 2014
Now the AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket Wireless, and MetroPCS builds for the Qualcomm-powered Galaxy S III are all being unified under the "d2lte" designation. The new Galaxy S4 designation is simply "jflte," combining the international LTE, generic Canadian, Sprint, T-Mobile, Verizon, Cricket, C-Spire, and US Cellular builds. The Exynos builds are remaining separate. The Galaxy Note 3 has fewer carrier variants since it's relatively new, but the international LTE, T-Mobile, Verizon, and Sprint builds are all being combined into "hlte." All three combined builds have one nightly download available at the time of writing.
If all goes well, users across all applicable carrier variants shouldn't notice any difference between the latest nightly build and their previous distinct builds. According to CyanogenMod, the next phones to get the integration treatment will be the Moto X and the Galaxy Note 2.
Source: CyanogenMod Blog