the Pazz-N-Jop results? They should be in sometime next month.
There tend to be more year-end albums lists than songs lists, so that could be another reason for the albums list being posted before the songs list (also, Metacritic may be another- there's no Metacritic songs list).
There will be a 2005 singles list in the next update, but I can't say exactly when that is going to happen. I am not necessarily waiting for the P&J poll, but JR is right that I wanted to get a few EoY singles lists first to make the results a bit more stable.