When you add a second specialization (of a new basic career), how may skills are added as career skills?

Only the 4 of the specialization or also the 8 of the basic career?

I know this was discussed in this topic:

http://www.fantasyflightgames.com/edge_foros_discusion.asp?efid=323&efcid=46&efidt=729742

But is there anything defined yet?

I believe this got discussed on the Order 66 podcast, possibly the one with Sam Stewart, though it could have been Jay's first appearance.

In short, you only get the ones noted as bonus career skills.

So if you started out as an Explorer/Fringer, and later pick up the Scoundrel specialization from Smuggler, you only add those skills noted as "bonus career skills" from Pilot, not any of the skills that are listed for the Smuggler career.