Then you weren't following the network closely . Since it was established, Aljazeera has always been leaning toward being arab nationalism , anti zionism & anti imperialism. Its coverage of both Afganstan & Iraq " invasion" was very clear ( the only news channel that calls them jihadis & martyrs Not terrorists- unlike other news channels in the region like Al Arabia for instance ). Not to mention its intentisive pro Hamas & pro Hezbollah coverage the past few years prior to the Arab spring.
Like I've written earlier, the past few months witnessed a change in direction in Aljazeera coverage from very obvious MB influence to think tank influence ( Azmi bishara , Shadi Hamid,...) not to mention it imbraced the new media
Appointing CMU/ Imperial college of London graduate QatarGas COO sheik Ahmed bin Jassim Al Thani has administrative meaning and I doubt would have any effect in the network's policy