As far as I read about magento's documentation I can't find how all that deprecated content will be replaced. The only information is also displayed in each deprecated class of this module ( \Magento\Backend\Block\ )
/** * Backend grid item renderer * * @api * @deprecated 100.2.0 in favour of UI component implementation * @since 100.0.2 */
Where can I find how these classes will be treaded? forn now my only source is: http://devdocs.magento.com/guides/v2.2/ui_comp_guide/best-practices/semantic_config.html
In which it say that there it will be a new book but not sure if is already out. I have a Huge module in adminhtml where is displayed all my admin contentn and need to know if there are out there some content to know how to modify all those classes, or should I wait a little more, for upcoming (release maybe?) information from Magento's team
Also if the idea is not cleared with this, here is the deprecated content/classes https://github.com/magento/magento2/tree/2.2-develop/app/code/Magento/Backend/Block
Hope you can give me some light here!