There are no test photos of any supposed 2008 Camaro because a 2008 Camaro isn't necessarily being developed at this time.

GM is consolidating its number of platforms and there's not really anything in their current lineup that a relatively cheap Camaro could be made out of. They had a platform in the works called Zeta for lower-priced rwd cars than the Sigma platform that Cadillac uses, but scrapped it.

Now they are considering making a cheaper, "Zeta-lite" platform, but that plan has yet to be confirmed.

So maybe if/when that gets going, a Camaro might perhaps start its way towards production.