It has been proposed that Mylyn be removed from most Eclipse packages . So far only the PHP and Committers packages are planning to continue to include Mylyn. This is a result of the lack of activity on the project and (real or perceived) lack of use of Mylyn.
Mylyn is a stable and mature project, but as various project committers have moved on, there is very little capacity left to maintain it. For now, Mylyn will remain in the SimRel but if this becomes a problem, I will remove it unless a suitable party has stepped up to take on the necessary maintenance.
Note that this refers to Mylyn Tasks/Context/etc. and not Mylyn Wikitext.
Sam Davis | Senior Software Engineer & Team Lead | Tasktop