Yes..
This is the update. Just follow the procedure which has you install v1.10 first, then install 1.11
Also, bear in mind, you do this procedure at your own risk. Although, I've heard many say it went easy without and problems.
That is fantastic, thanks Steve...I am so glad I came across this forum! I have done plenty of DSLR firmware updates and this looks pretty similar and it will save me being without the camera for a week.