+** Functions `rmail-delete-forward' and `rmail-delete-backward' take an
+optional repeat-count argument.
+
+** Function `sort' can deal with vectors.
+
+---
+** New utilities in subr-x.el:
+*** New macros `if-let' and `when-let' allow defining bindings and to
+ execute code depending whether all values are true.
+*** New macros `thread-first' and `thread-last' allow threading a form
+ as the first or last argument of subsequent forms.
+
+\f
+* Changes in Frames and Windows Code in Emacs 24.5
+
+** Emacs can now draw horizontal scroll bars on some platforms that
+provide toolkit scroll bars, namely Gtk, Lucid, Motif and Windows.
+Horizontal scroll bars are turned off by default.
+*** New function `horizontal-scroll-bars-available-p' telling whether
+ horizontal scroll bars are available on the underlying system.
+*** New mode `horizontal-scroll-bar-mode' to toggle horizontal scroll
+ bars on all existing and future frames.
+*** New frame parameters `horizontal-scroll-bars' and
+ `scroll-bar-height' to set horizontal scroll bars and their height
+ for individual frames and in `default-frame-alist'.
+*** New function `frame-scroll-bar-height' to return the height of
+ horizontal scroll bars on a specific frame.
+*** `set-window-scroll-bars' now accepts five parameters where the last
+ two specify height and type of the window's horizontal scroll bar.
+
+** The height of a frame's menu and tool bar are no more counted in the
+frame's text height. This means that the text height stands only for
+the height of the frame's root window plus that of the echo area (if
+present). This was already the behavior for frames with external tool
+and menu bars (like in the Gtk builds) but has now been extended to all
+builds.
+
+** Frames now do not necessarily preserve the number of columns or lines
+they display when setting default font, menu bar, fringe width, or
+scroll bars. In particular, maximized and fullscreen frames are
+conceptually never resized if such settings change. For fullheight and
+fullwidth frames, the behavior may depend on the toolkit used.
+*** New option `frame-inhibit-implied-resize' if non-nil, means that
+ setting default font, menu bar, fringe width, or scroll bars of a
+ specific frame does not resize that frame in order to preserve the
+ number of columns or lines it displays.