The only crisp new $5 prefixes I have seen so far this year are APGs, and we are nearly 9 months into 2008 much faster than we could imagine.
I tell you, this is looking to be a really rough year for new $5s, but I'd say there'll be light at the end of the tunnel soon enough. I'm sure I'll see APK and APL (maybe even APJ) very soon - seeing that there may be more demand for $5s in the months leading up to Christmas.
I did see a few APFs in near-crisp quality since June, though. But nothing higher than APG, unfortunately. I just haven't had time to go to the banks much this year.