New selection lasso tool. Hold Ctrl-Shift on Windows/Linux, or Cmd-Shift on Mac, then use the mouse to draw a free-form loop around nodes you wish to select.
Edge label rotation allows edge labels to be aligned with the edge slope.
Table styles are now part of the Network Style and are applied to the node and edge tables.
New App Store panel has replaced the old “App Manager”
Search bar is faster and more reliable. There are new types of search queries available such as numeric range queries.
See release notes for more details: https://cytoscape.org/release_notes_3_10_0.html