I preordered two Samsung Galaxy S III phones (one blue, one white) to replace my Incredible and her Incredible 2.
My Incredible was beyond its two year mark and has a h/w issue causing reboots during certain operations, so I was due for a phone anyway. Her Incredible 2 wasn't up for a discount until next year, so I transferred the upgrade from our basic phone on the account and was able to get the discount rates.
This staves off losing our unlimited data plans for at least a year beyond what we expected (i.e., no upgrading her Incredible 2 next year) due to ordering before June 28th, and moves us up to 4G in the process. The difference in cost vs. new family data sharing rates and monthly phone charges easily exceeds the cost of upgrading her phone a year early.
We really enjoyed our Incredibles, though - I was willing to stay on my rooted Incredible with jermaine151's Insensitive Minimalist for even longer, but the phone had a recurring bug that caused unexpected reboots at the worst times under every ROM it has ever run . . . so, it eventually needed a replacement.