Also, there has already been firmware released so if you so choose, you can upgrade the ipv2s to either 70 or 75 watts (I'm not sure which, I don't recall). I own the ipv2s and love it, haven't felt the need to boost it yet since 60 watts has been well beyond what I need so far, but it functions beautifully. Also the beveled edge going around the box has been finished in like a chrome which sets off the design nicely I think, adds a classier look to the device. Also, upgraded buttons and the dinky screws everyone was complaining about have been upgraded to larger hex screws. Another improvement IMO is that the backplate is now one straight backplate without that line/indent cutting across the top portion about a half an inch from the top. Also, one of those fabric loops have been added to the internals to help you pop the battery out (but I just leave the battery in for the most part and charge it via the sub charging port). Gets really great battery life, I've been on one 18650 purple efest battery for two days and still have about half the charge left, while in my mech mods I would go through at least one or even sometimes two 18650's in a day. Just loving it.