[franciscoap]

Back in the day, Netscape did a full rewrite between major versions. There's a Spolsky blog post about it: http://www.joelonsoftware.com/articles/fog0000000069.html

Very interesting read.

[dagw]

This is totally different. They're not re-writing their application from scratch, but replacing a core component with a popular, well tested and widely support one.

[franciscoap]

Indeed it is -- GP only mentioned he didn't know any example of a large amount of code being thrown out, so I provided one.

[pornel]

They are ditching their UI toolkit and dev tools as well. It does look like a complete rewrite, maybe with copy&paste of some old features like gestures.

[DeepDuh]

Thanks for the link, it's indeed a good read.