Jeppesen JeppView 3 - Manual (Page 159)

JeppView User's Guide
162
Obsolete Charts
Terminal charts sometimes become effective between the standard chart cycle
release dates. At 0901 GMT of the effective date, the expiring mid-cycle revision
chart icon is marked with a red dot. The new chart icon is marked with a green dot.
The old chart and the red dot disappear the next time you update your terminal
charts.