It is not. We ran out of ability, both in memory and processor ability, to improve the original EFIS-D10 long ago (hence the rise of the EFIS-D10A).
EFIS-D10 to EFIS-D10A upgrades still start at $350, and max out at $480 if you have the remote compass and if you end up needing the encoder converter (to get gray code back out of the EFIS-D10A) after the upgrade.
We are, by the way, just about there with the current generation of products too, hence the next generation we've just announced. The autopilot will be the last really major feature that we'll be able to pack into the current line of products, though there will be smaller updates, and full Dynon-caliber support, for a long time.
