For those of you who want to enjoy the latest TouchWiz-based Lollipop for your Sprint Galaxy S5, check out either the ported version of international Lollipop or slightly-modded stock rooted Lollipop ROM.
For the ported international version, you will get a working wifi hotspot, working call recording, KNOX removed, call blocking for calls/MMS/video, and modded MMS so your MMS will work out of the box. I actually like this version over the Sprint version because it has zero Sprint bloatware and also you will be able to experience 100% what the international S5 users get. The only thing not working on the ported version is your Wifi Calling so if you must use that feature, I highly suggest to use the Sprint Lollipop instead. The performance and battery life is excellent on this version, I have tested over a week while using it over at CES 2015 in Las Vegas.
For the Sprint version, you will get a fully-working wifi hotspot out of the box, call recording, KNOX removed, AdAway app, and very similar to the ported international version but this is based on the official Sprint firmware. You will find all of your Sprint bloatware on this version along with support for Sprint Wifi-Calling. This version also may be installed dirty over older stock Sprint ROMs. In other words, if you are running a stock Sprint TouchWiz ROM, you should be able to install this right over without doing any wipe.