Yes this is confusing, the 08 has the passenger side filter under the intake plenum (must be removed to remove that filter). The driver side is in the same place as other years, behind driver side plastic cam gear cover. You need to remove the air pump to see it on the 08.
Some have on other years removed driver side bolt without taking timing belt apart. I'm not sure if things changed but I say no way to do it on my 08, even grinding the head off the bolt. The timing belt has to come off, cam gears.
FYI you can tell the bolts have a filter inside because the bolt head is slightly raised.