[Hellzed]

ATV-5 Georges Lemaître, Europe’s fifth and final Automated Transfer Vehicle, will be orbited on the night of 29 to 30 July atop an Ariane 5 ES rocket to supply the International Space Station. It was decided to delay the VA219 launch, previously scheduled on the night of 24 to 25 July, in order to proceed with complementary verifications on the Ariane 5 ES launch system.

European Space Agency and CNES are streaming the event live from French Guiana :
http://www.cnes.fr/web/CNES-en/10082-follow-ariane-launch-live.php

The ATV spaceships are basically refuel and resupply units for the the International Space Station. (and these things are pretty big)

Enjoy !

[Goober5000]

And this is the last ATV, unfortunately.  I wish ESA hadn't decided to discontinue them after this mission.

[Hellzed]

It's not exactly the end though. The Orion service module will be a modified ATV.
http://en.wikipedia.org/wiki/Orion_Service_Module

[Goober5000]

The technology will continue to be used, yes.  But the unique capabilities that the ATV provides for the ISS will be lost after this mission.