CBS is pretty excited!  Paul McCartney is going to stop by the Colbert show tonight.

Tim P. Whitby/Getty Images

Will he sing, probably not.  So, what's up?  Paul has written a children's book.

How about this for the book's name?  It's called "Hey Grandude!"

So far the book is getting great reviews,

From the legendary Paul McCartney - an action-packed picture-book adventure celebrating the fun grandparents and grandchildren can have when their imaginations run wild.See the compass needle spin - let the magic fun begin!Grandude is a one-of-a-kind adventurer - a Mary Poppins for the modern day!

Sounds like a good "Come Together" read.  :-)