This is the first alpha release for entityform_block 8.x-1.x.
Note that the functionality provided by this module in Drupal 8 is different from 7.x-1.x. It does not just integrate with the entityform project but allows to create a form for any entity type and bundle. It can be used to create nodes, for example.
Planned but not yet implemented features include support for editing existing entities through the block context system, selection of form modes and more.