Latte Dock 0.10 released last year but now development has ended by its main developer with the v0.11 not expected to materialize. This open-source dock is built using the KDE Frameworks and optimized for Plasma desktop use.
Latte Dock developer Michail Vourlakos announced yesterday he has ended his work on the project, " I am stepping away from Latte development. No time, motivation or interest from my part is the main reason...I hoped that I would be able to release Latte v0.11 but unfortunately I can not. Releasing Latte v0.11 it would mean that someone would maintain it afterwards and that is no more the case. "
Latte Dock
He hopes some other developer(s) will take over developing Latte Dock but it remains to be seen and as with many open-source projects there are resource issues widespread.
Vourlakos ended his post with, " For the last 6 years developing Latte was a beautiful journey and taught me plenty new things. I would like to thank you all for that beautiful journey, kde community members, users, developers, enthusiasts and plasma developers. "