It seems there are lots of little refurbs going on around Downtown Disney for both restaurants and retail outlets some are fairly minor like a new sign/logo others are a bit more extensive including the Rainforest Cafe. The refurbishment is mainly external so the restaurant will remain open during the building work. The face lift will include a remodeling of the iconic volcano to make it more realistic and will include a lava flow effect and new water features, one of the highlights will be the addition of a new bar called the Lava Lounge which some are saying will be a new outside bar whilst others are saying it will be a re-imagining of the current bar area. I will keep you posted as we find out more information and the construction progresses further! Work is said to be completed Fall 2012.
Here is the current concept art showing the new Lava Lounge position and Volocano: