Although my intention was not to make the Contacts section for 4.1 (that is to disable it) and to wait for Telepathy and Akonadi to be integrated into KDE PIM, I just couldn’t wait.
Lancelot now shows on-line contacts from Kopete, altogether with contact pictures. Unfortunately, the D-Bus interface to Kopete is underpowered so the list updating is pooling-based. Alternative would be to make a Lancelot plug-in for Kopete, but that will have to wait for post-4.1 period (if the need for that remains).
No other IM applications are going to be supported for the time being. I intend to make the IM connections pluggable… but it will not be done for 4.1.
The next step will be to populate the left side of the window with e-mail related stuff such as unread messages from KMail.