[bigtones]

That Atlassian Confluence model you gave had some serious issues, they they are going to turn off the option to keep the old UI as well, and it is an enormous strain on Engineering resources to keep two different versions of an entire application UI up to date.

One company that had done this a bit better was Salesforce with the old UI / Lightening UI switch.

[robertlagrant]

Yeah but it's necessary. The old UI would cause people to leave; the new one is actually really good.