Here is an overview of the changes made in uMap recently:

The biggest change, even if it’s not the more spectacular, is that Leaflet.Draw has been replaced by Leaflet.Editable as drawing engine. The goal was to have more control over the API, have touch support, and have multipolygon/polyline support. For now two enhancements come from that move:

• It’s now possible to continue a line. There are two ways to achieve this: right click on the last (or first) vertex of the line, or ctrl-click on the first or last vertex:

  

• It’s now possible to draw (and edit) polygon holes: right-click inside of a polygon to start creating a hole:

  

Next step is to handle multipolygon and multipolyglines editing and touch support (Leaflet.Editable is ready for that, but uMap itself need a bit more work).

• when clicking on an element (marker, polygon…), it’s now possible to open a panel, instead of the classic Leaflet popup

• A slideshow mode allows to create some simple storymaps, see for example this map: http://umap.openstreetmap.fr/en/map/reconstitution-de-laffaire-alexandre-junca_11107

• When using a clustered layer, it’s now possible to define the cluster text color:

  

• Added a basic GPX and KML download, thanks to togpx and tokml:

  

• Until a proper multipolylines support, they are now merged (instead of being skipped) at import

• A table editor allows to edit all elements of a layer in one view:

• sometimes, we want a polygon to act as background, without being clickable. This is now possible trough the clickable option.

• it’s now possible to take control of the popup template using variables. Those variables will be populated dynamically from the elements properties. For example, let’s say you have imported a geojson having the following properties: price, name, image, description; by default, only the name and the description will be displayed. But you can now take control of this. Here is an example of template to use with such data:

    # {name}
    {description}
    {{{image}}}
    Price: **{price}**
  

• Added shortCredit (displayed in the attribution bar) and longCredit (displayed in the caption panel) properties, for more custom captions

• a basic HTTP concurrency control has been added: if two persons edit a given layer of a same map in the same time, the last to save will be prompted that its changes will erase the changes made by someone else and asked for confirm before really saving:

  

• the “filter” field in the data browser was only filtering on the name property of the elements; this can be now controlled in the map properties

• added a datalayers parameter, to override which layers will be visible on map load (useful to have different URLs for the same map, or when using the iframe exporter)

• it’s now possible to set a marker lat/lng properties by hand:

  

• it’s now possible to import multiple files at a time

• when importing files, it’s now possible to create a new layer on the fly (one layer per file when importing multiple files)

• GeometryCollection are now imported

• dataUrl and dataFormat querystring parameters have been added, to fetch and import remote data when creating a map; so for example an external site can point to http://umap.openstreetmap.fr/map/new?dataUrl=url-of-a-geojson&dataFormat=geojson to allow users to create a new map with some data already imported. For example click here to create a map with OSM data of Sark Island

More about uMap on the wiki: http://wiki.openstreetmap.org/wiki/UMap

Good umaping!