I currently have a 4 year old white MacBook which is getting a little tired. It's slowed down quite a lot and it's 120GB hard drive is constantly full. I'm planning on getting a new MBP, I have the money now but I wonder if it's worth waiting a few months before buying? I have a desktop and an iPad to keep me going and I plan on getting the new iPad when it comes out, but If theres going to be a design refresh on the MBP I'd prefer to wait for that. I can realistically wait until September/October time - is there likely to be an update before then?