I have cs 5.5 web premium with FB 4.5 and I red here:
https://adobeformscentral.com/?f=aqd5Yq*ONlcAvnasuWDB8w#
that I might be able to get free upgrade to FB 4.7 is this right ? I send this document that is in link above but after 2 days there is no answer. I hope this is a good place to ask question like this one.