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+## Breaking Changes in _Tcell_ v2
+
+A number of changes were made to _Tcell_ for version two, and some of these are breaking.
+
+### Import Path
+
+The import path for tcell has changed to `github.com/gdamore/tcell/v2` to reflect a new major version.
+
+### Style Is Not Numeric
+
+The type `Style` has changed to a structure, to allow us to add additional data such as flags for color setting,
+more attribute bits, and so forth.
+Applications that relied on this being a number will need to be updated to use the accessor methods.
+
+### Mouse Event Changes
+
+The middle mouse button was reported as button 2 on Linux, but as button 3 on Windows,
+and the right mouse button was reported the reverse way.
+_Tcell_ now always reports the right mouse button as button 2, and the middle button as button 3.
+To help make this clearer, new symbols `ButtonPrimary`, `ButtonSecondary`, and
+`ButtonMiddle` are provided.
+(Note that which button is right vs. left may be impacted by user preferences.
+Usually the left button will be considered the Primary, and the right will be the Secondary.)
+Applications may need to adjust their handling of mouse buttons 2 and 3 accordingly.
+
+### Terminals Removed
+
+A number of terminals have been removed.
+These are mostly ancient definitions unlikely to be used by anyone, such as `adm3a`.
+
+### High Number Function Keys
+
+Historically terminfo reported function keys with modifiers set as a different
+function key altogether.  For example, Shift-F1 was reported as F13 on XTerm.
+_Tcell_ now prefers to report these using the base key (such as F1) with modifiers added.
+This works on XTerm and VTE based emulators, but some emulators may not support this.
+The new behavior more closely aligns with behavior on Windows platforms.
+
+## New Features in _Tcell_ v2
+
+These features are not breaking, but are introduced in version 2.
+
+### Improved Modifier Support
+
+For terminals that appear to behave like the venerable XTerm, _tcell_
+automatically adds modifier reporting for ALT, CTRL, SHIFT, and META keys
+when the terminal reports them.
+
+### Better Support for Palettes (Themes)
+
+When using a color by its name or palette entry, _Tcell_ now tries to
+use that palette entry as is; this should avoid some inconsistency and respect
+terminal themes correctly.
+
+When true fidelity to RGB values is needed, the new `TrueColor()` API can be used
+to create a direct color, which bypasses the palette altogether.
+
+### Automatic TrueColor Detection
+
+For some terminals, if the `Tc` or `RGB` properties are present in terminfo,
+_Tcell_ will automatically assume the terminal supports 24-bit color.
+
+### ColorReset
+
+A new color value, `ColorReset` can be used on the foreground or background
+to reset the color the default used by the terminal.
+
+### tmux Support
+
+_Tcell_ now has improved support for tmux, when the `$TERM` variable is set to "tmux".
+
+### Strikethrough Support
+
+_Tcell_ has support for strikethrough when the terminal supports it, using the new `StrikeThrough()` API.
+
+### Bracketed Paste Support
+
+_Tcell_ provides the long requested capability to discriminate paste event by using the
+bracketed-paste capability present in some terminals.  This is automatically available on
+terminals that support XTerm style mouse handling, but applications must opt-in to this
+by using the new `EnablePaste()` function.  A new `EventPaste` type of event will be
+delivered when starting and finishing a paste operation.
+\ No newline at end of file