Update centre column (#1470)

* Update centre column

Previous news was rather out of date
Switch to a pre-announcement for next year's workshop

* Avoid relative year phrases

"this year" / "next year" goes stale real quick!

_layouts/main.html

@@ -62,19 +62,21 @@ <h2>Meetings</h2>
 
 
   <div class="col-lg-4">
-    <h2>JuliaHEP Launches</h2>
+    <h2>HSF-WLCG Workshop</h2>
     <p>
-      After a lot of rising interest in Julia for HEP in the last few years, the HSF
-      has started a new <a href="{{ 'workinggroups/juliahep.html' | relative_url }}"><it>JuliaHEP</it></a>
-      working group.
+      We will have a joint HSF-WLCG workshop in 2024 at DESY, from the 13-17 May.
+    </p>
+    <p style="display: block; text-align: center">
+    <img src="{{ '/images/hsf_logo_angled_square.png' | relative_url }}"
+    alt="HSF logo" style="width:33%; margin-left: auto; margin-right: auto;">
+    &nbsp;
+    <img src="{{ '/images/WLCG-logo.png' | relative_url }}"
+    alt="WLCG logo" style="width:33%; margin-left: auto; margin-right: auto;">
     </p>
-    <img src="{{ '/images/juliahep/juliaheplogo.png' | relative_url }}"
-    alt="JuliaHEP logo" style="display: block; width:55%; margin-left: auto; margin-right: auto;">
     <p>
-      We just published a new paper <a href="https://arxiv.org/abs/2306.03675">Potential of the Julia programming language for high energy physics computing</a>
-      and we're planning the first <a href="https://indico.cern.ch/e/juliahep2023">JuliaHEP Workshop</a> in November. Keep
-      an eye out for upcoming Julia events in the <a href="{{ 'future-events.html' | relative_url}}">calendar</a>!
+      Save the date!
     </p>
+
    </div>