I don't see "New" by the 15" MBP on the store site, I thought there were no changes? I wasn't paying full attention during the whole keynote.

The 13" model has, I believe, been a more popular seller for Apple, so it makes sense they'd put the newest tech in them first. If they plan on keeping the 15" model around, which would make sense to do, then it will come. Just not today.
As for the new "MacBook", well, should make "imaging" kind of interesting since by default you can't have one connected to a network or local disk AND power simultaneously. Time to move away from any kind of imaging it seems, unless really necessary.
It also seems like a good opening for 3rd party makers to make a USB-C type dock for these new models.

EDIT: Yeah, the 15" was not refreshed. Is that what you were thinking @jwojda?

Ars Technica makes the point that Quad-Core processors from Intel aren't available from Intel until later in the year, which explains why there's no update to the 15-inch MacBook Pro with Retina display.