Though the actual title of the game remains unchanged. I do not remember this being in the original version prior to the Premium being added to the sales title. I'n not sure, but I do think there was some additional content added to the premium version, that is the times seek and find levels where for example you get 60 seconds to find all the gold in the image. The previous giveaway was also labelled as a Premium Edition. I was confused as to whether there was extra content added. It's odd that no one has mentioned this over the course of the giveaway. I'll report back via the thread I've posted in the game discussion forums. If I have time I may contact Playrix over these name changes and ask what exactly are the differences (if any).
I would suggest that Playrix stick with the original titles. Upon viewing the adverts for Playrix (above) it would seem that they may be adding phrases such as "Collectors Edition" and "Premium" to existing titles.
I had been a great fan of Playrix, but this has caused confusion and delay.
It was a poor choice for Playrix to include the word "Premium" in the title. I have downloaded and installed today's giveaway, and compared it with the giveaway of and all directories and files within seem identical with today's. To all those who wonder if this is a new "Premium" version, I believe it is NOT.