Given that we all have very grave doubts about the company's continued existence, I'm personally passing on the beta. I'll wait until it's "final version" release. Last thing I need is for the company to go under and be left with an eDGe I *might* be able to roll back to a working version...

EDIT: Keep in mind that doing the rollback from Ermine to the current Dingo version will require you to re-register your eDGe. If the enTourage registration server is no longer up, you won't be able to do the Adobe registration part, which means you will no longer be able to read purchased eBooks on the eInk side. By passing on the beta, you retain the ability to read purchased books, at least until such time as you need to do a factory reset (which most people don't).