You dont have to inform there is no problem dont worry,keep us updated on your progress as i am waiting for mine as well,are you able to track your progress through vfs ??I applied through VFS with my passport on August 1st and they delivered it the next day early morning in Abu Dhabi. I also have travels already planned end of August and wrote them 3 letters asking to expedite urgently together with the ticket confirmation. Fingers crossed it will come back soon!
PS. I am moving to london for work in September - anyone knows if this will not cause any problem? I don't have to inform Canada Immigration anymore after getting the visa right ?