[stephenr]

> Lastly, there may be 4 ports in total, but since 1 is used for charging

Only if you're using it exclusively for charging. They literally showed using it with a display that gets video out over the same cord it powers the laptop with.

[gnicholas]

Yeah, but how much do I need to spend to upgrade to said monitor?

[metafunctor]

Looks like it'll be $1,299.95: http://www.apple.com/shop/product/HKN62LL/A/lg-ultrafine-5k-...

Available December.

[stephenr]

USB-C/Thunderbolt hubs should start around $120.

It doesn't need to be a 5K 27" display to provide power over USB-C.