Earlier indications from Metro would be that the DEIS for the Lake Oswego transit project would be coming out soon ("summer"), appear to be off the mark. Today, Metro issued a statement setting forth a new timeline for completion of the DEIS work, and selection of the locally preferred alternative. Metro also published a fact sheet giving more details.
According to the new schedule, the DEIS will be published in September, at which point there will be a 45-day public comment period, with the LPA selected in the November-December timeframe.
According to some commenters here who have been following the project closely, some of the published data in the current planning documents has run aground on the sharp rocks of reality--one hopes that the DEIS will reflect these findings. (And one hopes that the public comment period isn't entirely for show...)