All signs point to a March release of the iPad 3, with an enhanced Retina display and potentially a faster processor and LTE/4G data speeds. Any one of those would probably be enough for me to upgrade from my iPad 2, so in preparation I looked into selling my old iPad. When I upgraded to the iPad 2, I handed down the iPad 1 to my kids. I plan to repeat that pattern, and that frees up the original iPad. Even though it will be several generations old, my 16GB WiFi iPad 1 was worth over $200 at SellYourMac.com. I've written about them in the past, so I thought I'd put my money where my mouth is. Or in this case, my iPad where their money is! They have a great track record of offering the best value for your gear, and I like that they specialize in Apple equipment.
I also checked Gazelle.com but they offered $150 to $180 and for that amount, I figured I would just keep it. I also checked and my iPad 2 is worth over $300 at SellYourMac.com, so in theory, I could trade both in and get the iPad 3 for nothing! But I'll keep the iPad 2 for my kids and as a backup!
I'm hoping the iPad 3's form factor is close enough to the iPad 2, so I can reuse my cases and other accessories. Stay tuned and I will report on my iPad 3 impressions as well as the inevitable flood of accessories. I would suggest you act fast if you plan to upgrade. Once the iPad 3 is announced, those older devices will lose their value pretty quickly. Those rumors indicate an announcement around March 7th with availability around March 16th. I'll see you in line at the Apple Store!