Will the upgrade cards in the core set be scattered in Wave 1 or will they be unique to the Core?

From what I've read in the FFG wave 1 expansion articles, they appear to have separate command cards and named ship cards to the core set.

They do however have basic upgrade cards like engine techs, etc.

Here's the articles on what cards are included with the wave 1 expansions

Empire

http://www.fantasyflightgames.com/edge_news.asp?eidn=5325

Rebels

http://www.fantasyflightgames.com/edge_news.asp?eidn=5348

I read those articles, but even those previews are not showing all the information. For instance, FFG is hiding the Rebel A-Wing named pilot card. (Tycho - something, but doesn't list the details).

There has been a debate on whether or not to have two cores, but if the upgrades in the core prove to be valuable then it might be a good idea.

If you look at the card fans in the product images you can see core set cards mixed in. The previews have told us most of the other cards, but I'm pretty sure there's a few left un spoiled.

For instance, FFG is hiding the Rebel A-Wing named pilot card. (Tycho - something, but doesn't list the details).

While I can't help you in unlocking the secrets of the card text, I can safely tell you that the pilot's full name is Tycho Celchu. They're sticking to the biggest names among fighter jockeys it seems.