This recent release includes cosmetic cleanups and several label changes in TWS. Additionally, this is the first in the new series of release numbers. The current beta release is version 10.10. Subsequent versions will continue the pattern with 10.11, 10.12, 10.13 etc.
We have combined the group of Financial Instrument Description fields, including Description, Exchange, Symbol, and Underlying, into a single field called Financial Instrument. This aggregation applies across all tools that allow adding/removing of fields and across all of our trading platforms.