ROS melodic does it support Turtlebot2 ?

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What should I do for running ROS on Turtlebot2 in my machine under Ubuntu 18.04? thanks

If you want to use 18.04 in the mean time before things are released you can always build it from source. There have not been many changes recently so likely it will just work out of the box. I'd suggest installing the core from debian packages and putting the turtlebot packages into a workspace.

Where could I find the turtlebot packages ? How to install them ?

There's a landing page for the TurtleBots here: http://wiki.ros.org/Robots/TurtleBot which can hopefully get you started.

Thanks for this question, would also like to run full TurtleBot2 stack in melodic on Ubuntu 18.04. Managed to actually build all of that and while waiting for the TB2 to arrive, want to work with simulator. Very close, but depthimage_to_laserscan nodelet is somehow broken.

For the build this worked

$ cd ws-melodic
$ wstool init src https://raw.githubusercontent.com/turtlebot/turtlebot/kinetic/turtlebot.rosinstall
$ wstool merge -t src  https://raw.githubusercontent.com/turtlebot/turtlebot_simulator/indigo/turtlebot_simulator.rosinstall
$ catkin_make

Running

$ roslaunch turtlebot_gazebo turtlebot_world.launch

almost works but getting

[ERROR] [1531744943.775336027, 0.200000000]: Failed to load nodelet [/depthimage_to_laserscan]

Seems that this nodelet is obsolete, superceded by other mechanism e.g. pointcloud-to-laserscan. Help apprec

Update, got depthimage_to_laserscan to build checking out mikaelarguedas-patch-1 branch. Still, keyboard_teleop does not work, probing.

Please don't post link-only answers as they're discouraged (the link can and does go down/disappear). This also seems like more of an advertisement than something that's intended to be helpful for the community