Update from Adywan on the Facebook page:

Adywan

The Wampa test shoot was promising. The ideas i had seem to be working, but they’re not 100% there yet. still some tweaking to do. But I’ll be doing the proper shoot this weekend and then it should take about a week to complete the compositions. So i will know by the end of next week whether or not the new Wampa will be included in ESB:R.

The wampa looks fantastic and is a dead ringer for the original puppet, really holding out hope that it will go as planned and will show up in ESB:R.