You mean this pack?
Yes. Anything that has apple loops and says it is compatible with Logic 7 and/or Garageband, should be fine with Logic 8 and 9 too.
Apple Loops are essentially a type of file which allow for easy time-stretching (match to project tempo) and allow for pitch transposition - the Apple Loops way.
It appears you also get instruments too!
"Total of Apple Loops: 5,931:
Total of Instruments: 342:
Total of Samples used in Instruments: 3,459:
Grand Total of all Loop/Samples: 9,390"