I have been looking to buy a PX3B for roving practice purposes, and have shopped around over the past few days, only to find that all the local shops are sold out of PX3B. Some guy at GC even said that they may have discontinued it. PX3B is still up on the Korg website, and the PX4B is not there, though people keep saying it is rumoured to be on the way. I was looking online for a place to buy one, and low and behold, musicians fiend is advertising the PX4B due out later this month... Has anyone else heard anything about this?? Think it's worth putting my order in?