I don't think iPad 2 support will be dropped this year. Let's not forget that the iPad mini 1st generation used the iPad 2's chip and display. I see no reason why they would need to drop support when supporting the iPad 2 would be effortless if they must continue with the first iPad mini.
No. iPad 2 support must be ended now. It's time for these consumers to buy into the new products if they want the best of Apple iOS enhancements and technologies. The longer they continue to support obsolete technology the more entitled consumers will feel in the future to free updates.