I chose to swap for a Titan -- a much better deal, and I'm happy they gave good customers the option.
KNC have prioritised setting up their own massive mining rig in northern Sweden above getting the Neptunes to their customers in time.
Now 3 TH is worth a lot less than a Jupiter's 550 GH in October. Even less so when they finally come out.
They have significantly contributed to the expansion of the network in the past two months, and they're keeping it for themselves first -- they have completely diluted the value of the Neptune, and screwed over their customers.
My advice: if you still have a Neptune on order and have the option to switch to a Titan -- do it and mine Litecoin or any of the other scrypt twatcoins out there.
It is unlikely the Titan can RoI if they release it in late September.