Is the Verse of Isaiah 29:11 about Prophet Muhammad?

Muslims believe that the verse Isaiah 29:11

11 And the vision of all is become unto you as the words of a book that is sealed, which men deliver to one that is learned, saying, Read this, I pray thee: and he saith, I cannot; for it is sealed: KJV

is about Koran and Prophet Muhammad.  They argue that if this is true then the book sealed is already opened by Prophet Muhammad and so Maitreya is incorrect and his claim is false since the book sealed is opened already and Prophet Muhammad was the last Prophet.

The answer is that they are half correct.  Yes indeed that verse is Revealed for Prophet Muhammad and the Revelation He received.  He was offered to read (Koran) and He could not since He was illiterate.  However, as you can see it says the book sealed, not the Book Sealed with the Seven Seals. 

In fact all scriptures (books) Revealed by Major Prophets were Sealed and unknown to humans until they are Revealed to man.  So all of them opened a sealed book and One of the Seals of the Seven Seals.  The Book which Reveals the Mystery of all the Revelation (Seals) before it is the Book Sealed with the Seven Seals that will Reveal the meaning of each Seal (book sealed) in the Plan of God.

This last Revelation of God will be Revealed with One who has Fulfilled all the Prophesies, is the Lion of the Tribe of Judah, a Sayyed, etc, etc.  This only will happen at the End Time.  This later Revelation is what Maitreya Claim He has opened.  Prophet Muhammad could not have been this Last Prophet and Revealer.  This Muslims and all humanity have to understand and Surrender unto.