Hi Scott,

I think it may be a little premature to say. Those widgets were checked in as a result of an investigation on how we could migrate our internal APIs to Ext4. I don't think our development staff has had a chance to completely review the results. At the same time one of our developers has recently returned from SenchaCon (the dev conference of the company that created ExtJS), so I'm sure once we get feedback our strategy for how we proceed will change.

Sorry to be so vague, but I'm hoping that by the end of 11.3 we will have a clearer picture of how we move forward with Ext4 in the next release.