The next sequel - will it be any good?

I'm tempted to say "Hell no." Oftentimes, in my opinion/experience, fourth installments as well as the bringings-back of older films' characters in newly-made features often turn out... well, awful.
but a few days ago I saw Toy Story 3, a film by the same company as TLK, Disney (well sort of - technically Pixar was the larger contributor as far as plot and making, but Disney had a huge part). It blew my mind, and had me even more interested than TS3's predecessors. Since Disney has released a film with circumstances similar to TLK (older predecessors that were big hits), and done such an amazing job, I'm rethinking my opinion about Disney's ability to make a decent fourth installment of TLK after it's been dormant, so to speak, for so long. What are your thoughts?
