I do not see where the official
SAP Help has been updated yet but I did notice the software was available for download this morning:

So I will only cover what I have observed so far.
Table Rule Design Editor
The table rule design editor now has a copy button (far left)
Link Dimensions
You can link dimensions across crosstabs, and this means when you filter on the main cross tab it will also filter and navigate across the linked cross tabs. They should share common dimensions

You can see the above icon indicates they are "linked"
Group Dimensions
You can group dimensions to "dependent" cross tabs. One cross tab becomes the "main".
The common dimension appears only once after grouping
You can see crosstab 1 is main, crosstab 2 is dependent
You can ungroup in the dependent cross tab or from the ribbon:
You can only navigate in the "master" cross tab
No Display
You can define a dimension to be "no display" in the Properties panel
Workbook Protection
You can select operations allowed while protecting workbook
Exclude Copy & Paste from Clipboard or File
You can explicitly exclude members from a file or a range
Example clipboard:
!ZY0217A
ZY0217B
!ZY0236
ZY0393
ZY0580
!ZY0589
ZY0597
!ZY0611
ZY0633A
ZY0633B
ZY1287A
<ZY1287B
Filter based on copy clipboard:

Result:
More to come, especially after the official SAP Help is released.