I did not like the new layout of DimDim ALpha. It´s very strange when you have to open a powerpoint and show to users. If user is with "chat with all" window activated, only a half of slide screen appears and user needs to scroll right to see all the content. The slide is also in a small size.
When Popout option is selected, the slide remmains in a small size placed in a large blank area that is not used.
I would say I do prefer the layout we found on last version because presentation (PPT) was showed within a good space, size and layout.