Facebook Home has created a buzz in the internet world and many people have tried the leaked download on their phones. However, many complained that app access and switching are significantly slowed down by the controversial launcher.
On the other hand, if you are one of the more adventurous and would try everything to see if it's worth giving a chance to, you can already download and install it to verify these claims. Most Android phones that run on version 4.0 and above can install this launcher.
Also, you need to update your Facebook apps prior to activating the APK, but you can also get patched Facebook apps versions, if you have hardware issues.
The Company has not yet released any official statement regarding the Facebook Home launcher and interestingly, many people are trying it out but half are more likely to rate it low because they either don't like the interface or they don't like "too much Facebook" on their devices.
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