Android developers still should care about Gingerbread users. Every month Google publishes platform statistics collected from Play Store.
We are keeping previous statistics and it's quite easy to make some forecast. Month ago we made such forecast for January. Let's check it...
You can see more details in this document. From the last month the speed of "loosing Gingerbread" was increased from 0.07% to 0.08% per day. With such speed Gingerbread will has less then 10% of users approximately at the 1st June.
So, if you plan to release your app this summer, you need to consider, does it really needed to support Gingerbread? I hope, next month statistics will be much and much better.