It does look much like Dracaena deremensis 'Lemon Lime' Paul if the photo on plantoftheweek is correct.. I think colour and the width of colour bands can vary on these and this one is likely to be a widely sold cultivar.
http://www.plantoftheweek.org/...
Two varying Dracaena deremensis 'Lemon Surprise'
http://www.cfgphoto.com/img311...
http://www.cfgphoto.com/img126...
Now comes the crunch! Yours looks more like Dracaena deremensis 'Paradisio', this site has many cultivars so other photos you see may not be correct! Even the site this is on has two different looking plants..
http://www.cfgphoto.com/img975...
http://www.cfgphoto.com/img956...
http://www.cfgphoto.com/search... (you might need to search for Dracaena again to get all the results..)
