I was pretty excited about going into my final year too - particularly about going through the graduate employment process and seeing where I'd end up. I was eager to finish my summer placement, enjoy a few weeks off in September before starting again, for one final time.
My advice to those going into their final year would be:
Enjoy it. Savour it. It's difficult, but it'll be your last year, so try to enjoy it.
Really try your hardest. At my uni the final two years were 50:50 each, but at some the final year massively outweighs those preceding it, so it always has a high bearing on your overall degree classification. Don't take your foot off the pedal, even if you think you know that you're practically guaranteed a certain classification.
Now is the time you want to be preparing for graduate jobs. Research the companies you'd like to work for, and create a spreadsheet to track your progress. Lots of them open for applications as early as the beginning of September, so be prepared before then and use that time before university starts to get in some early apps.
Not to put pressure on anyone, but this year will have quite a bearing on what you do for the rest of your twenties, so don't fall behind in either your studies or job searching. This isn't the year to be having lie-ins and watching Jeremy Kyle all the time.