Changes

New 'Inspector' pane - for displaying current variable values, function and macros definitions, labels' values and option variables values
Search & Replace
Autocompletion for builtin and user define functions/variables
New translation: Czech

Major new features:

new cell types added: Subsection, Page break
sections and subsections are 'auto-numbered' (think LaTeX)
title, section and subsection cells can be folded (to hide the contents)
Addition of 'panes' to the user interface (the buttons at the bottom concept reworked)
Buttons from the bottom moved into a 'General Math' pane
New 'Statistics' pane - shortcuts for statistics related Maxima functions
New 'History' pane - command history
New 'Insert Cell' pane - shortcuts for inserting cells
New menu entry for 'to_poly_solve'
Improved rendering (more TeX-like) of integral, sum, product symbol and parenthesis via jsMath fonts
New translation: Danish

Minor improvements / fixes:

certain special keys (Windows key...) are now ignored (before, pressing them inserted garbage)
hiding improved: hiding a text or input cell now shows the first line of the content
zooming improved: zoom is now percentual, affects only current document, changes all the fontsizes in the document
image cells now contain a line for a description of 'figure'
support for merging and dividing cells via right click menu
HTML and LaTeX exports improved (better styles handling fro HTML, changed Title cell handling in LaTeX, utf-8 encoding for LaTeX export...)
new inline plotting wrapper functions: wxhistogram, wxscatterplot, wxbarsplot, wxpiechart, wxboxplot.
fixed width input/output labels
toolbar is optional
animations can be viewed with mousewheel
improved speed of large outputs (useful for inline help with ?, example: '? plot2d;')
input label (%in) is reset to '-->' if there are changes in input since last evaluation
various bugfixes

Major new features:

new wxMaxima document format (not compatible with .wxm) which saves maxima output and inline plots into a single file (you can still save and load ".wxm" format, but you don't get the improvements of the new one)
images can be inserted into the document
when input is modified after evaluation, output becomes gray to indicate it is no longer up to date
styles section improved: colors can be set for all elements of wxmaxima document, title, section and text cells can have a different font, support for loading/saving styles into a file
"Open Recent" added to the file menu

Minor improvements / fixes:

"unix copy" (copy on select) now working as expected (selection copies, middle mouse click pastes)
option to use evaluate with enter instead of shift-enter
full screen mode (alt + enter)
backspace and delete keys can be used for deleting cells when horizontal cursor is active
bugfixes
Restart Maxima doesn't clear the document
reduced the number of redraws - the GUI feels a bit snappier
Opening a WXM file doesn't automaticly restart Maxima

bugfix: set horizontal cursor after Maxima header when starting wxMaxima
bugfix: when horizontal cursor is active keys like left, right, page up/down, home/end don't insert a new input cell
new feature: optional, display center dot instead of *

wxMaxima document now made of 'cells'
cells can be evaluated with SHIFT-ENTER
long Maxima outputs can be hidden by clicking into the triangle at the top of that cell's left bracket
reorganised some menus
cells can now be edited by single-click
if you have a selection of text/code, ([{ will put ([{}]) around selection and place cursor before first ([{, pressing }]) will put the cursor after the last }])
double clicking will select the word under the cursor
double clicking on (,[,{ or },],) will select the text/code between ([{ }])
F1 now selects the word under cursor if there's no selection, and searches help for that word
removed the INPUT line
introduced a 'horizontal cursor': click between cells to set it, start typing to insert a new input cell, press F6 to insert a new text cell, SHIFT-UP/DOWN or click'n'drag selects cells
Maxima questions answered in the document - a cursor should appear, SHIFT-ENTER sends your answer to Maxima. If a cursor doesn't appear, click below the cell, type the answer and press SHIFT-ENTER