If upgrading, you may need to reset Preferences / File Displays / Status Bar to get all new functionality.
File type summary:
Default configuration now includes a compact summary of selected file extensions (or file type groups) with a total count or size for each one.
This is handy when using select-all in a large folder, in case any unexpected types are included.
Hovering over the summary displays the same information as a pie chart.
Clicking the summary displays the pie chart in a dialog, with controls to change what's displayed.
See New status bar codes, below for more detail.
Media duration:
Default configuration now includes selected and total audio/video duration.
Status Bar no longer triggers audio/video duration calculation by default, and instead only displays that information if a column in the file display has already triggered it.
You can change this via Preferences / Miscellaneous / Advanced: [Behavior] status_metadata_trigger.
Format lock:
By default, the Status Bar's old format lock (padlock icon) is now a more passive "info" icon.
Hovering shows information about the current Folder Format, as before, but left-clicking doesn't do anything.
Right-clicking opens a menu of options related to folder formats, with the format lock at the top. It can also be accessed via the default toolbars, in the Folder menu.
Preferences has an option to make it look and act as it did in previous versions.
New status bar codes:
Evaluator code (discussed in its own section) can be used in the Status Bar between {=...=} tags.
This allows for more advanced logic and text formatting.
The standard status bar codes are available as Evaluator variables (e.g. "tf" for total files), and a "path" variable gives you the current path.
{var:sys:CopySpeed} displays the total current copy speed.
{sel:namelen} and {sel:pathlen} display the length of the selected file name and full path, respectively.
{ft} shows the summary of file extensions or types discussed above:
Shows counts by default. {ft:size} shows size instead of count. {ft:size,count} shows both.
Shows all files by default. {ft:sel} shows the selected files instead of all files.
Buckets by extension by default. {ft:group} buckets by file type group instead. For example, .jpg and .psd files would both be in the Images file type group.
When bucketing by extension, a few common types are handled specially. For example, .jpg and .jpeg are treated as the same extension.
Shows the largest (count or size) items first by default. {ft:asc} shows the smallest items first instead.
When many types are selected, aggregates the smaller ones into a single item like "3 more". {ft:only} hides the aggregate item.
Shows up to three items (plus the aggregate) by default. {ft:5} increases it to five. {ft:-1} shows all items, no matter how many.
{ft:0} shows a single item with a count of distinct extensions.
{ft:frame} draws a frame around each item, instead of drawing them as normal status bar text.