Today Habbo UK upgraded to Build 52, only 2 things have changed (except for bugs) between the original release and this build that we have noticed.

The first change isn't very much but hints at what is to come:

The second update is more of a bug fix but we will put it here anyway:

They have simply made ther bit on the right where the X is a bit darker so the close button stood out more, thats about it.

Lab-Rat