It is expected to come next month.
Today, there is news saying Best Buy is selling iPad 2 at $50 discount now. I saw an article on the web talking about trade in iPad 2 now and prepare for iPad 3. We are still using and enjoying iPad 1 everyday. It is hard to image how to sell it today and wait iPad 3, without an iPad for 10 days. While trying to see how much iPad is still worth, I found out that gazelle.com will pay only $126 for iPad 1(16GB WiFi only in good condition). It is better to keep it or give friends/relatives as gift.
iPad 3 will be great. People will rush to store to get one next week. For me, I will go to local Apple Store to take a look when iPad 3 is there.
