According from Kaplan book [orange cover]

TOEFL iBT Highlights

1.       Toefl ibt measures receptive and expressive skills equally. Half the total score on the test is based on reading and listening abilities –on how well you receive and understand English. Half the toefl score is based on speaking and writing abilities --on how well you express yourself using English.

2.       Toefl ibt measure integrated skills. In the speaking and writing sections of the test, there are several questions in which you must read and/or listening, then speak or write based on what you read and heard.

3.       Toefl ibt contains no Structure section. As already mentioned, toefl ibt includes no discrete-point testing. Your knowledge of the grammar of English is measured with the skills sections of the test. For example, you must correctly apply rules of English grammar when speaking on the test.

4.       Toefl ibt used more authentic language in the reading and listening passages. For example. In the Listening section, speakers in a conversation may interrupt each other, just two people naturally do when engaged in conversation.

5.       Toefl ibt allowed note-taking, You can, and in fact should, take-notes in every section of the test.