Apple did announce that they are working to redesign the Mac Pro a few months ago but at that time, they announce that they will be releasing it in the fall without announcing any official date.
Well, the Mac Pro has just been spotted in FCC filings suggest that a launch could be nearer than we think. There is no guarantee that the Mac Pro will be coming out soon since it could take months for devices to be released after ti was spotted in FCC but for Apple, their announcement is usually very close to when they file it.
It was also added that the Mac Pros could be assembled in China which is surprising as Apple did announce that the computer would be manufactured in Austin, Texas. Some people are suggesting that maybe some parts are being assembled in China before getting ship over to Austin.