Update announcements

Announcements.md

@@ -95,7 +95,7 @@ Last, but not least, we welcome any contribution that helps making Spyder an
 efficient scientific development/computing environment. Join us to help creating
 your favorite environment!
 
-Enjoy!<br>
+Enjoy!
 -Carlos
 
 
@@ -131,63 +131,54 @@ scientific computing and software development.
 
 # Beta release
 
-**Subject**: [ANN] Spyder 3.0 seventh public beta release
+**Subject**: [ANN] Spyder 4.0 first public beta release
 
 
 Hi all,
 
 On the behalf of the [Spyder Project Contributors](https://github.com/spyder-ide/spyder/graphs/contributors),
-I'm pleased to announce the seventh beta of our next major version: Spyder **3.0**.
+I'm pleased to announce the first beta of our next major version: Spyder **4.0**.
 
-We've been working on this version for more than two years now and as far as we know
+We've been working on this version for almost two years now and as far as we know
 it's working very well. There are still several bugs to squash but we encourage all
 people who like the bleeding edge to give it a try. This beta version is released
-two weeks after our sixth one and it includes more than 200 commits.
+23 months after Spyder 3.0 and it includes more than 680 commits.
 
-Spyder 3.0 comes with several interesting and exciting new features. The most
+Spyder 4.0 comes with several interesting and exciting new features. The most
 important ones are:
 
-* Third-party plugins: External developers can now create plugins that extend Spyder in
-  novel and interesting ways. For example, we already have plugins for the line-profiler
-  and memory-profiler projects, and also a graphical frontend for the conda package
-  manager. These plugins can be distributed as pip and/or conda packages for authors
-  convenience.
-* Improved projects support: Projects have been revamped and improved significantly in
-  Spyder 3.0. With our new projects support, people will have the possibility of easily
-  working on different coding efforts at the same time. That's because projects save the
-  state of open files in the Editor and allow Python packages created as part of the
-  project to be imported in our consoles.
-* Support for much more programming languages: Spyder relies now on the excellent Pygments
-  library to provide syntax highlight and suggest code completions in the Editor, for all
-  programming languages supported by it.
-* A new file switcher: Spyder 3.0 comes with a fancy file switcher, very similar in
-  spirit to the one present in Sublime Text. This is a dialog to select among the open
-  files in the Editor, by doing a fuzzy search through their names. It also lets users to
-  view the list of classes, methods and functions defined in the current file, and select
-  one of them. This dialog is activated with `Ctrl+P`.
-* A Numpy array graphical builder: Users who need to create NumPy arrays in Spyder for
-  matrices and vectors can do it now in a graphical way by pressing `Ctrl+M` in the Editor
-  or the Consoles. This will open an empty 2D table widget to be filled with the data
-  required by the user.
-* A new icon theme based on FontAwesome.
-* A new set of default pane layouts for those coming from Rstudio or Matlab (under
-  `View > Window layouts`).
-* A simpler and more intuitive way to introduce keyboard shortcuts.
-* Support for PyQt5, which fixes problems in MacOS X and in high definition screens.
+- Main Window
+    * Create a separate window when undocking all panes.
+    * Add translations for Simplified Chinese and German.
+
+- Editor
+    * Code folding.
+    * Indentation guides.
+    * A class/method/function lookup “context panel”.
+
+- IPython Console
+    * Add menu options to start consoles in Pylab, Sympy and Cython modes.
+
+- Variable Explorer
+    * Add MultiIndex display support to the Dataframe viewer.
+    * Add support for all Pandas indexes.
+    * Add support for sets.
+
+- Outline Explorer
+    * Show cells grouped in sections.
 
 For a complete list of changes, please see our
 [changelog](https://github.com/spyder-ide/spyder/wiki/Beta-version-changelog)
 
 You can easily install this beta if you use Anaconda by running:
 
     conda update qt pyqt
-    conda install -c qttesting qt pyqt
-    conda install -c spyder-ide spyder==3.0.0b7
+    conda install -c spyder-ide spyder==4.0.0b1
 
 Or you can use pip with this command:
 
     pip install --pre -U spyder
 
 
-Enjoy!<br>
+Enjoy!
 -Carlos