According to an internal memo that was leaked to Mobilecrunch, the Droid Eris will receive its update to Android 2.1 tomorrow. Is this a fact, I would say no but it could happen. If this is true the Droid Eris will join the Nexus One and the Droid as the only 2.1 devices in the US.

The memo stated that the update was “tentatively scheduled” to start tomorrow. Judging from past 2.1 updates, there’s a really good chance that this will not happen. But, if it does there will be a lot of happy Eris owners. Having Android 2.1 on the Eris will give it new life and it will feel like an entirely different phone. Guess we’ll all find out tomorrow if this is real or not.