Element Update Training Across Generations

Hello,

I'm running an Element (the original) on version 2.2.0 of the EOS software. I'm looking to update to the newest version, but have two questions related to this.

1. Now that the element is a legacy product, what is the latest software version I can update to?

2. After updating, I'd like to be able to know what has changed over several generations of software. I'd like to stay proficient with the software and not have to go and relearn everything.

Any ideas?

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