Do you have proof from Google itself that they got hacked? If you do not I will have to close this thread as it might scare/give anxiety to other people.
You're right, no credit card information is being released. BUT...................................... If you had/have Google Chrome as of the day this happened, they injected a .dll file which over loads your CPU to 95-100% (Depending on GB's and processor) Anyways, it was leaked as a virus during a "Testing" service that Google failed to maintain safety with. Just install this and delete any background files to google chrome (Does not lead to injected DLL) http://www.revouninstaller.com/
I'll be locking this thread after I post. This was leaked ages ago, in fact from what I last read half the accounts have already been tested. By ages I mean years ago after it was done, it was just re-posted. You're causing an un-needed fear.