You can start right away to write your session proposals and apply as a speaker for the DrupalCon Paris.
Simply have a look on the schedule to already get an overview of the tracks and approximate times.
Once this is clear for you, submit a session (you need to be registered) and choose your track for which you would like to hold a presentation, a BoF or a panel.
Starting with the first proposal, attendees are able to vote via a thumb up or down on each session, which will help to choose sessions in case we have too many proposals. :)
Note, that the main conference language is English. However, if you would like to propose sessions specific for the French community, you may do so.
The submission deadline for session proposals is July 8th, 2009.
So you better get going, get the votes and speak at the DrupalCon!