In framework 2.5, featured image size options were limited to show/hide. However, framework will still process options onto old content files (if theme has them). To put this all back in place, simply add the options back with the following.

thumb-options-legacy.php

<?php
/**
 * In framework 2.5, featured image size options were 
 * limited to show/hide. However, framework will still 
 * process options onto old content files (if theme has them). 
 * To put this all back in place, simply add the options 
 * back with the following.
 */
function theme_featured_image_options( $options ) {

	$items = array('single_thumbs', 'blog_thumbs', 'archive_thumbs');

	foreach ( $items as $item ) {
		$options[$item]['options'] = array(
			'small'	=> __( 'Show small featured images', 'themeblvd' ),
			'full' 	=> __( 'Show full-width featured images', 'themeblvd' ),
			'hide' 	=> __( 'Hide featured images', 'themeblvd' )
		);
	}

	return $options;
}
add_filter( 'themeblvd_formatted_options', 'theme_featured_image_options' );