Just keep the iPad 2.
I'm not personally a fan boy that just buys all products and updates ever produced. Nothing wrong with that of course, but when you have a house and a family to keep these 'toys' aren't a financial priority.
If money was no object? Then no. For me I can't see a huge enough incentive or upgrade from me to buy ipad3.
Other than faster processing (the ipad2 is way fast enough for my current needs), larger memory space (I only use around 1/3 of my current 64 gig), finer ressy screen (again, iPad2 already has a beautiful screen. I'm really not bothered on the retina display issue), better camera (I only use mine for Skype, which is more than adequate) and other bits and bobs, no,
Besides, I've spent this last year getting my ipad2 just the way I like it. It's now part of me. I can't be arsed setting up a new device for not much noticeable return to be honest.
I'd certainly entertain the idea of ipad4 or 5 tho. But again, what ground breaking wow factor can it offer possibly? If it's just more of the above I've just mentioned then no, not interested.