Please add background image feature as in blender 2.79,in blender 2.8 we can't see the background image from front,top and side views - User Feedback - Developer Forum
How to Render a Background Image in Blender 2.8 Using a Camera Background Image - Henry Egloff
GuruBlog - new background image
Animation Background Concept Design in Blender [$] - BlenderNation
Transparent background option is under a heading named "Film" - Usability - Developer Forum
Designing Animation Backgrounds Using Blender & Photoshop | The Gnomon Workshop