The YuXin Earth Cube has been quite popular for a while now and is a very nice puzzle, it is an actual sphere and is an interesting challenge to solve as it tests both your knowledge of how to solve a 2x2 and your knowledge of the world map. I have heard of other world map cubes but haven't been able to get any until recently.
I also made a joke about the earth actually secretly being a very difficult bandaged 14x14 cube in a youtube video but it seems very few people actually watched that video.
I am not sure if this is actually a recent release or a re-release of some older puzzles but I have received some new cubes that are manufactured by Calvin's Puzzle, these are actually cubic puzzles which makes things different.
Since the earth is really a sphere, it can be difficult to imprint it onto a cube, this is the same challenge that mapmakers have had for hundreds of years whenever they try and make a map of the earth on a flat sheet of paper, I suspect it may actually be more accurate to put it on a cube than on a flat sheet.
Calvin's puzzle have released 4 new earth cubes, they have released a 3x3 and a 4x4 version with the flag of each country inside its borders. They have also released a 3x3 and 4x4 version with just the outlines and not the flags inside.
I have contacts with suppliers and am able to design my own cubes with their UV printing technology, however, there are quite high minimum order quantities, however, if you want any special cubes for your business or service and are willing to satisfy such quantities then contact me and I can sort it out for you.