diff --git a/README.md b/README.md
index 7905b56..000aa57 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,10 @@ A web-based SLA (Service Level Agreement) calculator for the eCom Content Factor
 
 ## How It Works
 
-1. **Select Brief Type** - Choose from 9 brief types (Country Pull, Global Push, Local Push, etc.). The app auto-populates which of the 8 project stages apply.
-2. **Configure Stages** - Toggle stages on/off, set complexity levels, asset volumes, revision rounds, and market approval days.
+1. **Select Brief Type** - Choose from 9 brief types (Country Pull, Global Push, Local Push, Urgent, etc.). Each brief type displays a scope description and auto-populates which of the 8 project stages apply.
+2. **Configure Stages** - Toggle stages on/off, set complexity levels, asset volumes (up to 300-400), revision rounds (supports decimals), and market approval days.
 3. **Enter Dates** - Set the project kick-off date and required go-live date.
-4. **View Results** - See the full timeline breakdown, key dates per stage, and a clear Y/N verdict on whether the deadline can be met.
+4. **View Results** - See the full timeline breakdown (List + Gantt views), key dates per stage, and a clear Y/N verdict on whether the deadline can be met.
 
 ## Project Structure
 
@@ -34,9 +34,9 @@ All assumptions, stage definitions, complexity levels, cross-reference tables, t
 
 - Uses **business days** (Monday-Friday), not calendar days
 - Each active stage adds: Handover (1 day) + WIP days + Market Approval days + (Revision Days x Rounds)
-- **Production speed-up**: PM can reduce WIP days by a percentage (e.g., 50% cuts 10 days to 5)
 - **Syndication buffer**: When syndication is active, a 10 business-day buffer is added to the suggested go-live date
 - **Stages 4 & 5** (Translation PDP + Asset) run in parallel and share one set of inputs
+- **Opera Upload** is mandatory for all brief types
 
 ## Features
 
@@ -46,6 +46,9 @@ All assumptions, stage definitions, complexity levels, cross-reference tables, t
 - Export to iCal (.ics) with key milestone dates for Outlook/Google Calendar
 - Real-time calculation on every input change
 - Tooltips matching the original Excel comments
+- Non-contractual dates disclaimer banner
+- Brief type scope descriptions displayed as bullet lists
+- Gantt chart view alongside list view in results
 
 ## Running Locally
 
@@ -91,3 +94,14 @@ The calculator has been verified against the original Excel workbook example:
 | Production Complete | 16 Mar |
 | Opera Upload Complete | 19 Mar |
 | Verdict | N (cannot meet deadline) |
+
+## Changelog
+
+### 2026-03-12
+- Added non-contractual dates disclaimer banner at top of page
+- Revision and approval fields now accept decimal values (e.g. 0.2, 0.5)
+- Opera Upload stage is now mandatory for all brief types
+- Removed "Speed Up by %" slider from Production stage
+- Extended asset volume brackets: added 100-200, 200-300, 300-400 (WIP day values are provisional placeholders — see `SLA_Asset_Brackets_Review.pdf`)
+- Updated all 9 brief type descriptions with client-approved scope definitions
+- Brief descriptions now render as bullet lists for easier scanning