Interesting - it does seem a rather minor upgrade, the only differences are the higher resolution screen, and more memory.
The higher resolution screen is good, should be useful for viewing more of the map. Hopefully they have also improved the screen contrast.
More built in memory is handy, but MicroSD cards are cheap as chips anyway.
I wonder if there's any improvements to the firmware?
I'm hoping for an Etrex with a few more features, as the top Oregon or Montana models have. eg Bluetooth or wifi for connecting to a phone, and the option of charging batteries in the device.