Of course they won't be implemented; we STILL don't know where this info came from, which IMO tells me it is all fake, especially when you read that silly "pointstreak" called heat vision, I mean, who would put that on, and more to the point, why would they have a streak that is restricted to only some weapons? nah, I call BS.
if theres one part of this leak i want to be true its the no tubes in HC. i only play HC in mw3 and tubes ruin it. when ur on an HQ and the whole other team is tubing the trophy systems go down quick, then ur tubed off the HQ. and in SND javelins on certain maps are so cheap and unskillfull. if you cant get a kill with a bullet then GTFO.