While this is the internet, and therefore I should not be surprised that there are some people who will complain, I think all those few people who are 'upset' that Apple may be about to update the iPad, because they have an 'new' iPad need to think about what is important in their lives.
Apple are not updating the iPad to alienate their customers, but they are a business. They want to make sure that they have the best product that they can in the run up to the important holiday market. Apple's tablet market share is slipping now that there is more competition in the market, and one of their competitors (Microsoft) is just about to launch a brand new product in the market.
I still have an iPad 1, and use it every day, it still does the same things (and more with additional apps and functionality that have been added since it was first purchased), and your 'new' iPad will still be able to do the same stuff that it always did. I purchase devices to get stuff done, not to show off to my friends and family that I have the latest iDevice. I feel sorry for those that feel they are no longer the 'coolest' kid in the playground, because they don't have the latest and fastest. And no your 'new' iPad is not going to be obsolete because Apple may bring out a new device next week.
It is easy to say this when you have iPad 1 instead of holding week's old two new iPad going to become two OLD iPads in a week. But thats life, isn't it?