Nice info on the Star Wars bubbles and is it currently fair to say that so far ->
Prototype Release has feet on the bubble, printed white "Look out for the exciting Action Force comic on sale", the back has prototype Red Shadow and other differences and has mail away commander offer on the left hand side
viewtopic.php?f=5&t=15031&start=40#p183008
Initial Release to Palitoy employees only, have feet on the bubble, printed white "Look out for the exciting Action Force comic on sale", the back has the mail away commander offer on the left hand side
1st Release have feet on the bubble, the black sticker "Free Action Force comic inside Battle, Tiger and Eagle during July and August" hiding the printed white "Look out for...", the back has the mail away commander offer on the left hand side
2nd Release have feet on the bubble, printed white "Free Action Force comic inside Battle, Tiger and Eagle during July and August", the back has the mail away commander offer on the right hand side
3rd Release have feet on the bubble, black sticker "Look out for new Battle Action Force comic on sale now" to hide the printed white "Free Action Force..July/August promo", the back has the mail away commander offer on the right hand side
4th Release have no feet on the bubble, black sticker "Look out for new Battle Action Force comic on sale now" to hide the printed white "Look out for the exciting Action Force comic on sale", the back has the mail away commander offer on the right hand side and has the dotted cut along yellow box
5th Release have no feet on the bubble, printed white "Look out for the exciting Action Force comic on sale", the back has the mail away commander offer on the right hand side and has the dotted cut along yellow box
6th Release have no feet on the bubble, yellow sticker "Collect them all!", the back has the mail away Skeletron offer, also used for all Battle Gear.
probably many more variants in between to reshuffle