I think it's just one of the random android notifications you get (Yahoo messenger, Facebook and stuff) . I won't trust anything until I see an actual conversation (text/audio, I don't need video so im not interested) within the app.
Yeah i'll prob wait till the 2.1 release rather than the beta to try it anyway. I really can't see why microsoft wouldn't put skype on the playbook though it's another platform and then if people pay for premium services it's just more money for them(just my opinion don't start another skype debate here there's so many already)