Definitely smaller but actually a small enough change I’m surprised I noticed. Thanks for doing the spade work!
Theory: someone decided that the time should be sized to stay within the “frame” of the date. Note how in beta 6 the ends of the time line up with the date whereas in beta 5 the time is outside the frame established by the date.
A good test will be if the clock slightly enlarges on Wednesday, which is the longest day of the week, letter-wise.