Here's the deal, upon brief inspection:
It's 41 loops, mostly 8 or 4 beats, all percussion and bass effects, and all in a similar style. (In their words: "electro/breakbeat drum and synth loops.") They sound good, at least on my PowerBook speakers 🙂 They loop, they sync like they should as near as I can tell in a quick test, and they include Soundtrack descriptors (like Processed). In short, they are what you'd hope for. They are presented for GarageBand or any AIFF-compatible app, but I used them in Soundtrack myself.
They are a sneak peak at the "forthcoming Apple Loops CD 'bitshift's bangin' beats.'" License terms look to be about like Apple's: use them, go nuts, sell your music made with them... just don't distribute them directly as part of your own loop collection! (See the included license file.)
Here's a list of all of the loops:
(The names do not literally describe what they are--Nails On Chalkboard for instance is nothing to do with that, thankfully! And RTFM does not have actual vocals!)
16 Angels On Horse.aiff
IIRC.aiff
AFAIK.aiff
Insects.aiff
Ana Bobanna.aiff
Mo Bruthaly Luv.aiff
Bad Guys.aiff
More Nasty Fun.aiff
Bitshift Hop.aiff
Nails On Chalkboard.aiff
Boom Boom.aiff
Nu Kool.aiff
Boom Flap Chunk.aiff
Nutter Butter.aiff
Break Fast At Tiffanys.aiff
OMFG Phase.aiff
Bruthaly Luv.aiff
PollyWannaCracka.aiff
Bubbalooney FSU.aiff
Quantize This.aiff
Bubbalooney.aiff
RTFM.aiff
Change Events.aiff
Sub Marine.aiff
Computers Suck.aiff
Swoop Down Arp.aiff
Dont Stop.aiff
Tiny Shards FSU.aiff
Doofy 2.aiff
Unecessary Drama.aiff
Drive Me.aiff
Wah Wah Wah.aiff
Falling Up.aiff
What Was That.aiff
Funkastella.aiff
Whos Your Daddy.aiff
Give Me Back My Code.aiff
Wonder Bread.aiff
Hecktic.aiff
Woo Wee Arp.aiff