Follow up:

I figured that maybe the anons replied somehow. How would the reply? sending messages back using bitcoins of course! I.e. back to the addresses that sent them the bitcoins. There are a few of these address though, and most of them are completely emptied out, but if you look at this address:
1A68Zamnv9yCHEYKbrvyPW6TQ8oANhhQ1y
http://blockchain.info/address/1A68Zamnv9yCHEYKbrvyPW6TQ8oANhhQ1y

It got back the message:
.00032
.00024
.00008

in binary:
00100000
00011000
00001000

Which AFAIK are just spaces.

Update: Also found something similar at 1LwLbxQUqVv4gS1anbDU3wY6jakih8s8Jc,
http://blockchain.info/address/1LwLbxQUqVv4gS1anbDU3wY6jakih8s8Jc

Message:
.0003

again just a space when translated to binary

Found another one (.0003) to
http://blockchain.info/address/1LwLbxQUqVv4gS1anbDU3wY6jakih8s8Jc

Found another one (.00032, .00024, .00008)
http://blockchain.info/address/1A68Zamnv9yCHEYKbrvyPW6TQ8oANhhQ1y

Update 2: I started looking at possible responses to the "for release" option, and it seems to be a process that is on going:
http://blockchain.info/address/1NNpaaasYkogJEuUidrpKigFEPFdn5z6jy

(Here you see the .00032 already sent a few minutes ago.)

Update 3: Due to lack of interest, I'll stop updating this and go on with life, but for completeness I found several of those .00032, .00024, .00008 responses to different addresses that had sent the anons money. Also, 615-762-9138 seems to be a phone number someone wants the anons to call. (Look at the BC transaction that is .07629138 then just use the area code of the PricewaterhouseCooper's branch that was hacked, which is 615).