will dobby return for order of the pheonix

[fuzz876i]

In The Goblet of Fire i missed seeing Dobby.  In the book he seemed to 
bring about the second task with the gillyweed.  In the Order of the 
Phoenix he provides the information of the room of requirement and 
tells Harry this is a good place for Dumbledore's Army to meet.  If he 
does not return in The Order of the Pheonix then will he return in The 
Half-blood prince or so you think they will omith the parts about 
Kreacher and Dobby both in either movie any thoughts?
Fuzz876i