He talks about being a funding option. So really they'll just be a bitcoin exchange of sorts. The real big deal here is Ebay!
Here's they chain: BTC -> Fund Paypal -> Buy on Ebay
That's where the real benefit for Bitcoin lies - Paypal is merely a transactional vehicle.
Also - it's easy to think that "Oh anyone can open a paypal account". This might be true in America, Europe and Australia, but in relatively well-connected countries like South Africa, India and China you can not easily open a Paypal account - due to funding regulations etc. Suddenly if you can fund via bitcoin, these problems go away and Paypal just doubled their potential user base with almost zero additional administrative effort. No fraudulent or reversible fundings.
Just my 2mBTC