I noticed the huge influx last night and stopped by here to see if anyone else had commented.
Doing a very rough estimate, it looks like there are almost 900 new albums this week (last week wasn't too shabby, either). At 15 songs per album (don't know how close that average is), it works out to over 13,000 new tracks. Nice.
I've been keeping an eye on the "just added" section, and the biggest previous week I noticed only saw in the vicinity of 2,000 new songs (that was a couple months ago). Wonder if they'll keep this pace up now that the indies are coming in...
(Smallest week was like 5 new albums, if you're wondering.)